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6.5 Creedmoor load development: Sierra 130 grain Tipped MatchKing (TMK) with H4350, Varget, Reloder 15 and Reloader 17, First impressions ofthe Modular Driven Technologies (MDT) HS3 Chassis system. Why not give JD Jones credit for the development of the 300 Whisper, which AAC tweaked into the 300 AAC Blackout by increasing the length of the chamber throat 0.015 and SAAMI-ed it. Win 296 and H110 are the same, 4227 is not. The 300 AAC Blackout Loading Data wasn't listed in the 2016 version because we hadn't received load data for that caliber at the time of the printing. These dimensions make caliber conversions of firearms from 5.56/.223 to .300 Blackout relatively easy, only needing a barrel replacement. A supersonic 300 Blackout round with a 110 grain bullet has a muzzle velocity approximately 1,000 fps slower than that of a 223 Rem, giving it a significantly faster bullet drop. I plan to build a bolt action with a 16.5 barrel and will use projectiles between 180 220 gr., so not sure if I should go with the 1-8 or get a 1-7 barrel blank made. The D&H Tactical magazine on the right shows no such issue with the 180-grain Rainier Ballistics FP, due to having shallower front ribs in the magazine. Such large projectiles convey a subsonic muzzle velocity that is accompanied by a quiet report. Winchester 231 is way too fast to be used for the 300 BO. M80 ball projectiles with about 16.5 gr. Powder meters great in my Dillon 550, I am 67 years old been using this forever in all my magnum hand guns and desert eagles meter fine in powder measures, Great powder . One of the benchrest guys I know asked how I liked my 300 BLK rifle. Powders that cover most 300 BLK projectiles. Then select your bullet weight, powder manufacturer and powder type. For this, you will need a powder scale. Now for preparations for 2018 Bear season There are also companies converting once fired 5.56 NATO brass (usually with the LC head stamp for Lake City) to .300 Blackout brass. 12 gr. IMR 4227 is a pistol powder with a medium burn rate, primarily intended for use in Magnum pistol and revolver cartridges. These guns have had mixed success. Thats a 16: bbl. by lupy123 Sat Dec 14, 2013 8:06 pm, Post 220 g round nose / 9.9 g H110 cycles 8.5 and 16 barrels no issues. Bullets for the .300 Blackout are where things can also get interesting. Converting an AR-15 to fire 300 Blackout is as simple as swapping its barrel. New Starline 300 Blackout Cases. Also slight keyholing and groups growing up. Address: xxl-reloading.com, Gartenweg 9, 83661 Lenggries, Germany. : 26,000 34,800 CUP Hodgdon 85 gr RN (Sierra) 0.308" Powder: H4227 (Hodgdon) Links to published Data added. Restrictions placed on us by the powder manufacturers do not allow us to email any load data. Ramshot Enforcer is also usable as a high-performance powder for .300 Blackout supersonic loads, ideal for projectiles ranging between 110 and 155 grains. Tuning any lower can result in inconsistent burn- aka squib loads- aka projectile in the barrel just waiting to become a KB. A value-priced red dot with a full set of features. Accurate 1680 (AA1680) is a well-known double-base propellant with one of the fastest burn rates available. Such loads tend to deliver more consistent performance, resulting in fewer muzzle velocity variations between each shot. Data from a POF 10.5" barrel, 1:7" twist. AAC 7.62 Suppressor , Crimp is most important as heavy bullets want to move on recoil in the mag and will cause vertical stringing. There are a handful of solid reloading manuals out there from Speer, Hornady, Sierra, and Barnes, to name a few. AR-platform rifles optimized to run subsonic 300 Blackout tend to fire supersonic ammo poorly. This could be Hodgdon H110, Hodgdon CFE Black, Accurate 1680, Reloder 7 or a variety of others. <> A .300 Blackout rifle loaded with subsonic ammunition and fitted with a suppressor is truly silenced; the firearms loudest element is the bolt going home with every shot. This will not be for specific loads, although some may be listed, but will be broken down for supersonic powders, subsonic powders, powders that work for both, as well subsonic powders for bolt action and single shot, and may be broken down more as things progress. x}% 9 V/@]Jz$Y-l7 m1#`2A2*tTfn2+O~W|S/_^Se=~oL/Ooh}k4m{zc{>{!w-77cz-Nnxo#j~_~t{pt/c|~z'Gc;2`gk)i,0 1cOh||z>3z L`];H\Gwyb^z-_.oWlw}E> In ill health for some time, Oliver F. Winchester died December 11, 1880 at age 70 in New Haven, Connecticut. and 8 lb. Duane Siercks, Ballistic Technician. New customer? You'll either spend less or shoot more. For more information, go towww.P65Warnings.ca.gov, I have gotten great results when used to reload 300BK OUT, Love this powder. Find load data for Shooters World Blackout propellant by clicking the button "Loads for this Powder".More about this powder:ShootersWorld: Ballistic results for this propellant show it appropriate for both pistol and rifle cartridges that incorporate a near straight-walled cartridge case. stream Any thoughts? Pingback: NEW: Sierra Bullets .300 AAC Blackout Reloading Data - AK Arms, Pingback: NEW: Sierra Bullets .300 AAC Blackout Reloading Data | Firearms Life, They should. It tends to be the most accurate powder in those two rifles cartridges. At worst, it puts you at risk of extreme and life-threatening overpressure. This is the best group achieved with the 300 BLK and 135 SMK at 100 yards. Beside h110 or 296, anyone have another powder they use for 147 supersonic loads? It is an effective way to obtain ammunition for lower prices than equivalent factory ammo. Avg. Reading a few different reports of accuracy issues with the cartridge in general (youll notice many of the sub sonic groups published online are shot at 25 yards!- more on this later), I came to the realization, that most of the good groups found with the cartridge were shot with either a special chamber (not a 300 BLK which has a long throat to accommodate the heavy bullets) or a slower twist rate to work well with the light bullets (SAAMI specifies a 1:8 twist, click link). [ETA] QuickLoad says if you want your blackout to go faster, reduce bullet weight (175 gr SMK) and run about 17gr IMR4198. The .300 Blackout is an intermediate rifle cartridge, just like 5.56mm NATO and 7.62x39mm. This I usually get from GI Brass Locker, though there are other sources out there.Primers will be whatever is prescribed in the load data that you obtain. INDICATES MAXIMUM LOAD USE CAUTION They are a lot more economical for plinking than spending the money on the Sierras. If youre only feeding a bolt-action rifle or only slow-firing an AR-15, then a single-stage press, such an RCBS Rock Chucker, will work. It is the same powder (but from different lots) but relabeled. No over pressure signs were evident in the cases or primers . Turret- and progressive-loading press options exist from Hornady, Lee Precision and Dillon. Although all Ramshot propellants are made in Belgium at the PB Clermont factory, it is a Hodgdon brand, benefitting from the companys decades of experience in smokeless powder manufacturing. Please help us to improve and report any suggestions via our contact form. Effective range for hunting is about 100-150 yards. An ideal solution for loading 357 Magnum, 44 Magnum, and even 410-bore shotshell ammunition, its high loading density provides optimal velocity. Powders for subsonic single shot, bolt action, Lehigh defense 110gr controlled Chaos factory load. Often powders that are way to slow to be used effectively in the 300 blk. Hodgdon produced the load data below using a 16 barrel with a 1:8 twist rate, Hornady cases with a trim length of 1.363, and Remington 7 1/2 Small Rifle Magnum primers. 2 0 obj <> 9.0, 10.0 grains Hodgdon H-110 powder (See chronograph data below) 2.230 COL (2.260 is max for AR-15) Use load data at your own risk. 180 grain rainier wedges cycled with 11ish grains of IMR4198 out of my PSA 10.5in suppressed with Syrac Ordinance adjustable gas block. Sierra Bullets 300 AAC Blackout Load Data, NEW: Sierra Bullets .300 AAC Blackout Reloading Data - AK Arms, NEW: Sierra Bullets .300 AAC Blackout Reloading Data | Firearms Life. Today, IMR is a trademark of the IMR Powder Company, a Hodgdon brand. I check every single one for the sake of making sure there wont be any problems during my shooting sessions. I save Lil' Gun for subs. and 8 lb. Ive been using Modular Driven Technologies Chassis systems for nearly four years. All this suppressor talk does not apply to 98per cent of the public. This can lead to poor accuracy from lighter loads. The more we all know, the better organized and stronger the shooting and hunting community will be. Copyright Ammotogo.com 2023 All Rights Reserved. The latter has nearly twice the propellant, and is therefore better able to fell very distant game. Born in Boston in 1810, Winchesters initial foray into business was as a maker of mens shirts. It is cross-compatible with. 1 0 obj They are only safe in the rifle shown and may not be safe in yours. Per the powder manufacturers, we are only able to reprint the data they have provided to us. http://www.300blktalk.com/forum/viewtopic.php?f=141&t=81553. Most data I have seen specifies small-rifle magnum primers.At some point, you may want to know how fast your .300 Blackout bullets are actually going. We are engineers, reloading enthusiasts and operate one of the most powerful ballistics calculators. At best, a powder charge that is safe to use with the lighter, shorter bullet may make it impossible to seat in the longer, heavier bullet. APP Automatic Processing Press 90951 90933, http://leeprecision.com/300aac-blackout-c-tb.html. I have loaded some 150 grain Power Points with I 4227. Available in 1 lb., 4 lb. Load data may show slight variations between 296 and 110, but as I understand it, those differences are from varied batches during testing time with each powder label. Copyright 2023 National Rifle Association, Women On Target Instructional Shooting Clinics, Volunteer At The Great American Outdoor Show, Marion P. Hammer Women Of Distinction Award, Women's Wildlife Management / Conservation Scholarship, National Youth Shooting Sports Cooperative Program, 224 Valkyrie Handloading: Working With Different Barrel Twist Rates, SHOT Show 2018: Daniel Defense V7P AR Pistol, Four Improved AR-15 Trigger Sets Under $100, First Look: B&T USA SPR300 PRO in .300 BLK, New: Magpul Enhanced Selector Kit For AR-Pattern Firearms | An NRA Shooting Sports Journal, First Look: Bersa BAR AR-15 | An Official Journal Of The NRA, Handloading The .223 Rem. Technical Specifications (based on the respective safety standard - see more details in tab "Datasheet" if available) Subscribe to the free newsletter and do not miss any news or promotions. The .300 cartridge uses the same powder as large caliber handguns, such as .44 & .45's. I think 296 and 4227 are the same powders, not 100% sure though. Id probably use one if I had one.As far as powder goes, youll need to find something appropriate for the loads youre intending to make. Find load data for Winchester 296 propellant by clicking the button "Loads for this Powder". 4 0 obj And i thought i was the only who ever tried sr4759. endobj Ramshot Enforcer is a high-performance, double-base spherical propellant intended for high-power handgun revolver cartridges, such as .44 Magnum, .454 Casull, or .500 Magnum. So Remington will be budget-priced UMC-brand 300 BLK ammo through at just $12.99 per box that's less than most other rifle cartridges than are more powerful than the .223. Your email address will not be published. IMR propellants have long been used to manufacture US military service ammunition, such as .30-06 M2 Ball (IMR 4895) or 7.62mm NATO M61 AP (IMR 4475). Rainier Ballistics has introduced plated 180-grain bullets for subsonic use only. We have the best 296 Winchester Powder For Sale here at Worldly Armory for a very Cheap and Affordable Prices. Vol. If you choose to load subsonic ammo for an AR-15, some bullet ogives can interfere with first rib in the standard AR magazine, causing the ammo to bind and not feed correctly. The 300 Blackouts .30 caliber bullet can be made especially long, and as the result may weigh up to 220 grains quadruple the weight of the typical 223 Rem rounds. I was at Cabelas flipping through several reloading manuals and could not find 147 gr. A crowd favorite for pig hunting, deer hunting and general subsonic fun with silencers, it remains a strong choice for many shooters. A look at 300 Blackout ballistics including velocity, energy and drop data for some of the most popular loads among American shooters. Depending on the weight and length of the bullet selected, the amount of space available inside the case may change dramatically. Example 220gr subsonic data there for h4198 and reloader 7 two thingsfirst not in anyway subsonicthey are high velocity. This is the only powder I have used in my 44 Magnum ever since. Alliant Power Pro 300-MP Lake City Federal 205 17.1 1866 19.2 Winchester 296 Lake City Federal 205 16.7 1894 18.4 Ramshot Enforcer Lake City Federal 205 15.4 1839 17.2 IMR 4227 Lake City Federal 205 16.7 1823 18.5 C Accurate 5744 Lake City Federal 205 17.5 1829 18.7 C Vihtavuori N110 Lake City Federal 205 15.0 1830 16.5 C 7. SD ----- 62 fps Both the 110 gr. How do you guys get different data for Win 296 and H110? Loading 300 Blackout - ep 10 - First subsonic test loads with Palmetto Projectiles Function and velocity testing with Winchester 296 Again, if youre using .300 Blackout ammo in a gas-operated, semi-automatic rifle, youll have less flexibility in powder, since the gun needs enough gas to cycle reliably. Oliver Fisher Winchester was an innovative and driven man who saw the future of firearms and built an industrial empire around the lever-action rifle. A typical 125-grain bullet for supersonic loads, such as a Sierra MatchKing 2121, has an overall length of approximately 1.18. A subsonic 300 Blackout round produces comparatively little muzzle flash in addition to a softer report, making it a fine choice for hunting in nighttime and twilight conditions. This website uses cookies to ensure the best experience possible. Early on, the claimed goal was to have ammunition prices on par with the inexpensive .223 Rem. When starting a new load, always begin with the starting load data written in a recent handloading guide, or 15% under a listed maximum load if there is no starting load data provided. The low case capacity requires the use of powders with a fast burn rate like H110 and IMR 4227. For the next 14 years Winchester aggressively sought new markets, created new products and explored new opportunities for his lever-action rifles. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. Old Craftsman 6-inch dial calipers passed on the author by his machinist father alongside a Wilson .300 Blackout case gauge. Share your experiences with other customers. WARNING: This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. You may have a great load that is pushing max and loading from an 8lb keg, and a few years later you buy another keg. I was rather surprised that I received an request to review Win 296 powder. There are many good reasons to reload for .300 Blackout. by rjacobs Sat Dec 14, 2013 4:27 pm, Post To clean your brass, you need a vibratory polisher/tumbler, polishing media and brass separator. Rounds were fed from a AICS style 223 magazine from Accurate Mag. Nosler BT 19 grs. A carbine length gas system (one comment mentioned 16.5 inch gun would not cycle the action) will not work with subsonic loads in 300 blackout. VAT (where applicable), shipping costs and possible delivery charges. All CFE powders are double-base, spherical propellants designed to perform 2 tasks: For example, CFE-223 is optimized for .223 Remington, CFE Pistol is best suited for commonly-used pistol cartridges (9x19mm, .45 ACP) CFE-BLK is designed for .300 Blackout. The 300 Blackout would never see mainstream military use, although it became popular in the civilian shooter market. by Merlin1274 Sat Dec 14, 2013 10:38 pm, Post 300 AAC Blackout is also finding use with hunters, who may not have been able to legally hunt with .223 in their state, and who prefer .30 caliber bullets for medium-sized game. Winchester 296 is a ball powder developed for large handgun loads. Winchester 296 . LOADS LESS THAN MINIMUM CHARGES SHOWN ARE NOT RECOMMENDED. Has N120 been discontinued? Winchester - Legendary Powders RELOADING DATA CENTER ALL THE LOAD DATA YOU'LL EVER NEED ALL IN ONE PLACE! Factory reloading info from Hodgdon's website as of Spring 2015. It is a beginning and the list will be adjusted and or modified as things progress. Winchester 296 is also recommended for 410-bore AA loads. endobj 300 Blackout is taking the shooting world by storm, and for good reason. There are offerings from Sierra with one of the notables being their 220-grain MatchKing. The subsonic will be quieter through a silencer, while the supersonic will obviously carry more energy for tasks such as hunting. I fired these in a Remington 700 at ninety yards without the suppressor attached. It is also widely considered to be the powder of choice for .410 bore shotgun shells. In contrast, a 220-grain bullet ideal for subsonic loads, like Sierra MatchKing 2240, possesses an overall length of roughly 1.49. Ultimate Reloader is not responsible for errors in load data on this website. A Nosler 125 gr. Good subsonic loads fired out of a suppressed weapon should be quiet enough that you dont need hearing protection. Joined Feb 16, 2018 Messages 439. The twist rate needed to accommodate the heavy subsonic bullets makes finding accurate super sonic loads difficult. As far as the other machines, I would stick to what they recommend.One of two tools I find indispensible, not including those for making necessary die and press adjustments is a case gauge. Smart and safe loader will back off the load and work it back up simply due to powder age and lot variation. When we are sold out, we are sold out. It was originally created for Winchester .410 shotgun factory ammo, but found use in 30 Carbine and magnum pistol loads. You MUST have a pistol length gas system. Besides the cost-saving advantages, handloading is also a way to tune your ammunition to your .300 Blackout rifles so that it performs with the best accuracy and reliability possible. 300 BLK, Cartridge Selection, Reloading Winchester continued to refine firearm designs with inventors Benjamin Tyler Henry and Nelson King, and on May 22,1866 the Winchester Repeating Arms Company was born. Winchester 296 is a ball powder developed for large handgun loads. 0. Second stupidly and even dangerously compressed loads If, you are wanting to use 4198 for driving a .223, then that is a different story. as well as finding the load data you're going to need. loads were well over the stated FPS in the loading data of 2100 fps. February 15, 2022. While subsonic loads are technically possible with W296, you should avoid them because it is too easy to reach dangerous overpressure levels with this powder. The 300 AAC Blackout is a similar concept to previous wildcats, such as the 30-221 and 300 Fireball, as well as the proprietary 300 Whisper, except that 300 BLK was the first to be a SAAMI approved cartridge and any company is free to make firearms or ammunition. Select your cartridge type from the drop-down list. The loads shown below are only considered safe in the test gun! I told him about my load development experience and he asked why I didnt use a 1:14 twist and a reamer with a short throat like he planned on doing. In today's episode of "I Carry," we have a Smith & Wesson M&P9 M2.0 Metal pistol with a Holosun EPS Red2 red-dot sight carried in a KSG Armory Lexington IWB holster. W296 is more than similar, it IS H110. Ballistically speaking, the 7.62x39 mm (center) is similar to the .300 Blackout (l.) and .30-30 Win. If you're unsure, or just want options, check as many boxes as you'd like. I am confident that it would also be well suited to .454 Casull and other strong calibers. Since my post back in Jan 2019, I have switched and lil Gun cut the groups in half.Sub sonic. Silhouette shooters claim it is the most accurate 44 powder they have ever used. Caution is warranted here. The target was a 2 orange dot printed on paper. Turns my carbine gas rifle into a single shot (no jams, doesnt even try to cycle), but highly accurate. However, it is listed in the 2017 and later printings. Winchester 296 (W296) is a high-density, spherical smokeless propellant, mainly intended for use with magnum revolver cartridges, such as .357 Magnum and .44 Magnum. Pistol ammo loads with H110 call for magnum primers. I have three sources of loading data: Lyman's. Create a free website or blog at WordPress.com. Communism only made one thing that works, and capitalism can make it even better. 1020FPS with last round bolt hold open If you arent worried about being on the cutting edge of accuracy, the fast twist needed to stabilize the heavier bullets, means you are spinning the lighter loads way too fast. Intended primarily for high case capacity, high-power cartridges such as .454 Casull, .475 Linebaugh, and .500 S&W Magnum, it has also been used successfully for decades in certain rifle calibers, such as 7.62x39mm and .300 Blackout. Winchester 296 is also recommended for 410-bore AA loads. A view into a Dillon Precision XL650 progressive reloading press midway through loading some .300 Blackout with 180-grain Rainier Ballistics FP bullets.The .300 Blackout has had a few years to grow now. . Some of the other guys may back me up on this, I haven't found any supersonic loads that don't deliver at least one inch groups in the Blackout but the subs are a different story. Very versatile. At 2.247 (with very slight variation on the press) fed find even with loading 30 rounds into a Gen 2 PMAG for me. Well you would be wrong. Once you reuse your brass, your ammunition costs will decrease even more. Offcource in case of subsonic 300 BLK, forgot to mention, sorry. The following are loads that Lehigh Defense recommends for the 194gr ME bullet. 448 54 Groups were 5 shots (unless otherwise indicated) at 100 yards. Hodgdon produced the following load data using a 16 barrel with a 1:8 barrel twist rate, Hornady cases trimmed to 1.363, and Remington 7 1/2 Small Rifle Magnum primers. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); If you guys had bothered to ask people what powder they would like to see lil gun would definitely be on that list. Feeds well in my Hornady progressive press. Id urge you to do the same. My TSAR 11.5 upper is flawless so far. These are powders that are typically marketed to the magnum pistol crowd, not the rifle folks. 3 0 obj The rifle, as pictured above, includes the following parts fromBrownells: For testing and evaluation purposes, I used 125, 135, 175 and 220 grain Sierra MatchKings (left to right in photo below) over H110 and IMR 4227 powders. Click "Get Data" to view results. The relatively fast burn rate makes it suitable for loading various varmint and intermediate rifle cartridges with limited case capacity, such as .22 Hornet, .221 Fireball, .222 Remington, or .300 Blackout. Converting an AR-15 to fire 300 Blackout is as simple as swapping its barrel. I am attempting to load both 2-1/2" and 3" Win HS hulls, using WIN WAA410HS wads (NOT the claybuster generic equivalent) and WIN 296/H110 powder. All content Copyright 1998-2018 Rifleshooter.com, FTC disclosure: some links on this site are monetized, Sig Sauer MCX Virtus PCP Air Rifle Review- Initial Impressions, Project Guns- Gunsmithing articles and posts, check out my 300 AAC Blackout Review from September 2012, 125, 135, 175 and 220 grain Sierra MatchKings, AICS style 223 magazine from Accurate Mag, Modular Driven Technologies (MDT) HS3 Chassis Review: Initial Thoughts, 308 Winchester Load Development: 175-grain Sierra Matchking and Varget, Building a Custom Remington 700 .308 Tactical Rifle, Smith and Wesson K-Frame revolver barrel removal and installation, 308 Winchester load development: Sierra .308 195 gr. JavaScript is disabled. Subsonic rounds are particularly suited for use with a suppressed carbine. 12 drop at 150 yd. Sierra 180Grain match king projo, 12.2 grains of powder. A view into a Dillon Precision XL650 progressive reloading press midway through loading some .300 Blackout with 180 . Relative Brun Rate: Yea, that's right. It is a compressed load and I have read about the dangers of compressing trail boss.. +1; Yup, TB gets really wonky if you compress it. Take your pick. So this is going to be a List of powders that can be used in the 300 blk. I use a Dillon Precision XL650 and Ive been happy with it.Once you have your press, youre going to need appropriate dies. I have complete faith in my Lord. Most accurate and functional: 10.0gr AA1680, WSPM @ 2.180 OAL - 1,025 fps. Your email address will not be published. Close range only. I know some may say to check every fifth, or tenth, or whatever number cartridge. Hogdon H110 isn't bad according to Foghorn (who graciously loaned . of H-110 as a supersonic loading. Other companies, such as Hornady, also have a variety of projectiles available ranging from light to heavy weight for the caliber. The LGSs by me that carry VV can not get 120. The case manufacturer, Nosler or Jagemann (JAG), is listed on the table below. I explained to him he wouldnt really have a 300 BLK anymore. Required fields are marked *. : 1.625" Powder: 16.5 gr 17.5 gr Vel. I worked up a load and settled at 9.8gr of 296 which turns out to be an exact load listed by Winchester on their load data website. The Rainier Ballistics bullets come in a wedge or a hollowpoint offering. Most of these loads are around sixteen grains so I guess they have similar burning rates. It isnt hard to save yourself roughly a third of the cost of a box if youre used to buying quality ammunition. For lightweight supersonic loads IMR 4227, Hodgdon CFE Black, Hodgdon H110, Winchester 296 and Alliant 2400 are good options. The part is free, you are just responsible for any applicable taxes and Shipping/Handling. These guns have had mixed success. Ordered 1:7 barrel to another gun, used same loads in exactly same conditions, no issues. There may be rate exceptions but your in for a lot of frustration if you go that route. Instability with 1:8 caused problems with loger cans, bullet maybe wobbling after rifling. . Prior to building a custom bolt action rifle in 300 BLK I did a lot of homework on loads and load development. We do not take backorders and our Tech Services team cannot take orders via email or phone. The design of the cartridge itself is a bit of an issue as well. The 300 Blackout's .30 caliber bullet can be made especially long, and as the result may weigh up to 220 grains quadruple the weight of the typical 223 Rem round's. So heavy a bullet conveys a subsonic muzzle velocity and correspondingly softer report. An ideal solution for loading 357 Magnum, 44 Magnum, and even 410-bore shotshell ammunition, its high loading density provides optimal velocity. Keep in mind that the benchrest crowd, the hot-rodders of this sport, feel the best accuracy is on the edge of stabilization. The 300 Blackouts recoil is not significantly different from the 5.5645, and its price isnt prohibitively higher. However, the 300 Blackouts heavier bullet compensates for its lesser speed to grant it an effective muzzle energy, and its 0.84 greater diameter enables it to inflict a wider wound channel. (296 and H110 are verified the exact same powder, just marketed under two different brand names.) In addition, H110 is "the" choice for 410-bore shotgun, especially among .