winchester 296 300 blackout load data

AR-platform rifles optimized to run subsonic 300 Blackout tend to fire supersonic ammo poorly. of H-110 as a supersonic loading. The short case length doesnt necessarily effect feeding, since the bullet of the loaded cartridge is similar in length to the 223 Remington, but it can make ejection difficult from many bolt action rifles. Simply telling me I am wrong won't help. In contrast, a 220-grain bullet ideal for subsonic loads, like Sierra MatchKing 2240, possesses an overall length of roughly 1.49. 300 Blackout Basics Specs and Cartridge INFO Daily Bulletin Runs with or without a suppressor. Not only does this allow for compatibility with existing magazines and bolts, but it allows reloaders to form their own brass from cut-down 5.56mm or .223 cases ensuring brass supply even in the event of a shortage of factory brass. He is a greedy old has been who would have let this cartridge perish. The case dimensions are very similar to .223 Remington and 5.56mm NATO, with virtually identical cartridge overall length (COL) and base diameter, allowing a shooter to load .300 Blackout cartridges in an unmodified AR-15 magazine without loss of capacity. Close range only. I generally use a balance-beam version, as its less expensive, but if youre inclined to spend more money, you can opt for a digital. Rather than having a steep shoulder and overbore case, like the 20 Vartarg (a 221 Remington necked down to 20 caliber), it has a relatively straight design that requires fast magnum pistol powders. It is the factory powder for Winchester 357, 41 and 44 magnums. Case capacity is critical with .300 Blackout. IMR 4227, W-296, H-110, or Lil'Gun instead of rifle powders like I expected. It is mankind I have no trust in. Then select your bullet weight, powder manufacturer and powder type. All .300 Blackout rifles can shoot either subsonic or supersonic with no additional changes or accessories, the only difference being in the ammunition. The gun doesnt move, there is even less recoil than an AR because you dont have the mass of the bolt carrier reciprocating in the rifle. Shooters World load data | xxl-reloading.com In contrast, subsonic .300 Blackout is ballistically very close to the Russian 9x39mm, the 2 often being compared to the point that bullet drop data and points of impact are virtually identical from 0 to 200 meters. It is an effective way to obtain ammunition for lower prices than equivalent factory ammo. Powders from 60-72 on the Hodgdon burn rate chart SHOULD all work(most have been proven to work) in the AR15 platform. Load Data Card - .300 AAC Blackout (7.62x35mm) - AR-15. Powders that cover most 300 BLK projectiles. 300 BLK - Powder Coated Bullets with Winchester 296 6,475 views Mar 9, 2017 166 Dislike Share Save Johnny's Reloading Bench 120K subscribers Testing some powder coated bullets with Winchester. VAT (where applicable), shipping costs and possible delivery charges. The .300 cartridge uses the same powder as large caliber handguns, such as .44 & .45's. Heavier subsonics can use Hodgdon CFE Black, Winchester 296 and Accurate 1680. Hodgdon H110 is identical to Winchester 296; it is simply sold under a different label. Share your experiences with other customers. 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. The latter has nearly twice the propellant, and is therefore better able to fell very distant game. Click "Get Data" to view results. A critical marksmanship skill that is easy to overlook. If you see something not right let me know, by also giving supporting reasoning. W296 is also viable for reloading .300 Blackout, although it is best suited for supersonic loads only. Hodgdon LiL' Gun now useless? | Ruger Forum I like the topic, good initiative on consolidating info for the new comers. Known for its ability to deliver heavy subsonic bullets for standard AR magazines while cycling the action in suppressed applications, it also works well with lighter supersonic loads, offering a similarexternal ballistic performance to the 7.62x39mm Russian (check out my 300 AAC Blackout Review from September 2012). Sign up to get updates and access to exclusive promotions. This cartridge accepts 0.308 bullets, making it a true .30-caliber cartridge for which a wide selection of projectiles ranging from 80 to 250 grains is available. Remember sib sonic loads are only a 100 yd load. = Subsonic Maximum load: 11.0 grains (ca 1100 Fps) = Subsonic Don W. CSR 406-234-0422 www.westernpowders.com We have the best 296 Winchester Powder For Sale here at Worldly Armory for a very Cheap and Affordable Prices. : 1,867 2,110 Press. The low case capacity requires the use of powders with a fast burn rate like H110 and IMR 4227. 147 gr. 300 Blackout load data - Indiana Gun Owners Beside h110 or 296, anyone have another powder they use for 147 supersonic loads? NEW: Sierra Bullets .300 AAC Blackout Reloading Data - The Firearm Blog VISIT THE RDC BALL POWDER In 1929, the Western Cartridge Company (forerunner of Winchester Ammunition) received U.S. Patent #2,027,114, issued to Western Cartridge as "Manufacture of Smokeless Powders." Ordered 1:7 barrel to another gun, used same loads in exactly same conditions, no issues. While the powder formulas are identical, the chrono testing is likely from different production lots. The Fora platform includes forum software by XenForo. New customer? East Central. Size -- Quantity It isnt hard to save yourself roughly a third of the cost of a box if youre used to buying quality ammunition. 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. Now I use the 296 only for my S&W 460. Enter your email address to subscribe and receive notifications of new posts by email. 300 Blackout Ballistics - Load Data & Chart - The Lodge at AmmoToGo.com Loading 300 Blackout - ep 10 - First subsonic test loads with Palmetto Projectiles Function and velocity testing with Winchester 296 In ill health for some time, Oliver F. Winchester died December 11, 1880 at age 70 in New Haven, Connecticut. In a life and death situation-who cares about the noise? Joined Feb 16, 2018 Messages 439. .300 Whisper / .300 AAC Blackout / .300 Blackout - Load Data It is cross-compatible with. Yes, I am a Baptist, and yes I carry a gun. Serving as optimal powders for their intended cartridges. This powder generates relatively high velocities, making it suitable for loading hunting or self-defense ammunition. However, it is listed in the 2017 and later printings. There may be rate exceptions but your in for a lot of frustration if you go that route. Turns my carbine gas rifle into a single shot (no jams, doesnt even try to cycle), but highly accurate. Loading 300 Blackout - ep 10 - First subsonic test loads with - YouTube : 1.625" Powder: 16.5 gr 17.5 gr Vel. It is a beginning and the list will be adjusted and or modified as things progress. Where 180-grain subsonics are concerned, so far Ive had good luck with Reloder 7. Factory reloading info from Hodgdon's website as of Spring 2015. 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. Check out the hodgdon site http://data.hodgdon.com/cartridge_load.asp More posts from r/reloading 74K subscribers SevereNameAnxiety 27 days ago So I met and befriended the guy that runs the local pd range. [ETA] QuickLoad says if you want your blackout to go faster, reduce bullet weight (175 gr SMK) and run about 17gr IMR4198. If you're unsure, or just want options, check as many boxes as you'd like. Available in 1 lb., 4 lb. How do you guys get different data for Win 296 and H110? Caliber .300 AAC Blackout| Reloading Data Rifle Data - Speer Reference Data - Winchester As far as twist rate is concerned,I wanted the flexibility of being able to shoot the light and heavy rounds, so I ordered a custom barrel from Bartlein with a 1:7 twist. Supersonic loads allow you to use lighter bullets and reach higher muzzle velocities. 2 0 obj Make sure always to observe reloading safety rules and not to reload while ill, tired, impaired, or in any state with less than your undivided attention. It was originally created for Winchester .410 shotgun factory ammo, but found use in 30 Carbine and magnum pistol loads. Hodgdon CFE-BLK was designed to provide that level of consistency and performance in the .300 AAC Blackout cartridge, particularly when making subsonic loads. $ 39.99. : 2,293 2,458 Press. PDF 300 AAC Blackout - Speer If you are planning to reuse your brass, and you should, you will probably want to clean it. 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. Screw JD Jones who sat on his product and refused to share his creation after earning millions. 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. Well you would be wrong. 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. All shooting was done prone, from a bipod with rear bag. Available in 1 lb., 4 lb. by tallburnedmidget Sat Dec 14, 2013 6:54 pm, Post Subsonic Blackout load | Page 2 | Rokslide Forum or 5.56 NATO chamber. Winchester 296 Ball Powder | Clinton Sporting Goods A better solution to this problem is to use the .300 Blackout-specific magazines made by D&H Tactical and Magpul.A couplenice-to-have items that are not necessarily required for reloading .300 blackout are a brass tumbler and brass separator. IMR 4227 is suitable for supersonic and subsonic loads. Running a rifle like this suppressed would be a hoot. Converting an AR-15 to fire 300 Blackout is as simple as swapping its barrel. * All prices incl. 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. To clean your brass, you need a vibratory polisher/tumbler, polishing media and brass separator. The 300 Blackout is frequently available with 200 and 220 grain bullets. by rjacobs Sat Dec 14, 2013 4:27 pm, Post APP Automatic Processing Press 90951 90933, http://leeprecision.com/300aac-blackout-c-tb.html. I explained to him he wouldnt really have a 300 BLK anymore. All this suppressor talk does not apply to 98per cent of the public. endobj I haven't had much luck with Trail Boss in the Blackout for what it's worth. My TSAR 11.5 upper is flawless so far. On the up side, firing the 300 BLK from a precision rifle is a pleasure. 152. Today, IMR is a trademark of the IMR Powder Company, a Hodgdon brand. An optimal powder charge fills up between 90% and 100% of the case, provided it doesnt result in dangerous levels of overpressure. Links to published Data added. Powders that have been tested and tried by others. BTW, small standard rifle primers are nearly identical to small magnum pistol primers .. about the same mix and cup thickness. Supersonic loads with lighter bullets are suitable for hunting and offer ballistics equivalent to .30-30 Winchester or 7.62x39mm. I have used this program for years and tke it with a very large grain of salt! The 300 AAC Blackout (300 BLK) is a popular alternativecartridgein the AR-15/M16 M4 (AR) community. 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. A few manufacturers offer bolt action rifles chambered in the 300 BLK. The loads shown below are only considered safe in the test gun! Advanced Armament Corporation began developing a .30 caliber subsonic cartridge optimized for the M4 platform in 2009. Most shooters use it in varying capacities from 200 yards or less. If you wish to run the 235gr Lee supersonic it will be fine but subsonic you should choose a different powder. I have three sources of loading data: Lyman's. After investigation, AAC found the 7.6239 cases aggressive taper too extreme for a standard M4 magazine to accommodate. Other companies, such as Hornady, also have a variety of projectiles available ranging from light to heavy weight for the caliber. It was easy to establish, reliable, repeatable results. You MUST have a pistol length gas system. We are currently populating the cartridge drop-down menu with updated cartridge renderings, new propellants and bullets, and links to complimentary product pages. The twist rate needed to accommodate the heavy subsonic bullets makes finding accurate super sonic loads difficult. Onm4>#wgfYcX+x;^!%w Gpho?w3x[:gb@UC8|tKn). To be able to use the full range of Shopware 6, we recommend activating Javascript in your browser. It is a classic reloading powder that should be on the shelves of any handloading enthusiast. They are attempting give you the best information out there. The subsonic will be quieter through a silencer, while the supersonic will obviously carry more energy for tasks such as hunting. Berry's 220 grain 300 Blackout bullets. 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. Best load data for subsonic 300 Blackout - Forums Wolf Small Rifle Magnum primers. You might think I carry a gun because I don't trust God. . When you purchase through links on our site, we may earn an affiliate commission, which supports our community. A forum community dedicated to anglers in the Texas area. 10 Best Handguns for Beginners and Home Defense, The Best Concealed Carry Holsters in 2022, Best Shotgun Mini Shells: Birdshot, Buckshot & Slugs, 8 Best AR-15 Ammo for Self Defense & Range, 5 Best Places to Buy Cheap 50 Cal BMG Ammo Online, 17.4-grain charge Muzzle velocity: 1,885 ft/s Muzzle energy: 1,025 ft-lbf Chamber pressure: 38,700 psi, 19.4-grain charge (compressed) Muzzle velocity: 2,062 ft/s Muzzle energy: 1,227 ft-lbf Chamber pressure: 49,000 psi, 15.6-grain charge Muzzle velocity: 1683 ft/s Muzzle energy: 943 ft-lbf Chamber pressure: 34,500 psi, 17.8-grain charge Muzzle velocity: 1,899 ft/s Muzzle energy: 1,201 ft-lbf Chamber pressure: 48,700 psi, 10.4-grain charge (compressed) Muzzle velocity: 1,056 ft/s Muzzle energy: 470 ft-lbf Chamber pressure: 29,100 psi, 10.1-grain charge Muzzle velocity: 1,044 ft/s Muzzle energy: 532 ft-lbf Chamber pressure: 26,700 psi, 19.0-grain charge Muzzle velocity: 1,866 ft/s Muzzle energy: 967 ft-lbf Chamber pressure: 23,700 psi, 20.0-grain charge (compressed) Muzzle velocity: 1,945 ft/s Muzzle energy: 1,050 ft-lbf Chamber pressure: 26,500 psi, 19.0-grain charge Muzzle velocity: 1,895 ft/s Muzzle energy: 1,077 ft-lbf Chamber pressure: 24,600 psi, 22.5-grain charge (compressed) Muzzle velocity: 2,090 ft/s Muzzle energy: 1,310 ft-lbf Chamber pressure: 37,000 psi, 11.6-grain charge (compressed) Muzzle velocity: 1,041 ft/s Muzzle energy: 501 ft-lbf Chamber pressure: 13,400 psi, 11.3-grain charge (compressed) Muzzle velocity: 1,045 ft/s Muzzle energy: 558 ft-lbf Chamber pressure: 20,000 psi, 19.5-grain charge Muzzle velocity: 1,877 ft/s Muzzle energy: 1,174 ft-lbf, 21.7-grain charge Muzzle velocity: 2,057 ft/s Muzzle energy: 1,410 ft-lbf Chamber pressure: 54,564 psi, 10.9-grain charge Muzzle velocity: 1,089 ft/s Muzzle energy: 553 ft-lbf, 18.4-grain charge Muzzle velocity: 2,191 ft/s Muzzle energy: 1,173 ft-lbf Chamber pressure: 38,900 psi, 21.7-grain charge Muzzle velocity: 2,286 ft/s Muzzle energy: 1,277 ft-lbf Chamber pressure: 48,400 psi, 15.7-grain charge Muzzle velocity: 1,921 ft/s Muzzle energy: 1,024 ft-lbf Chamber pressure: 32,400 psi, 18.5-grain charge (compressed) Muzzle velocity: 2,205 ft/s Muzzle energy: 1,350 ft-lbf Chamber pressure: 52,500 psi, 17.4-grain charge Muzzle velocity: 2,182 ft/s Muzzle energy: 1,163 ft-lbf, 19.3-grain charge Muzzle velocity: 2,362 ft/s Muzzle energy: 1,363 ft-lbf Chamber pressure: 54,472 psi, 17.5-grain charge Muzzle velocity: 2,182 ft/s Muzzle energy: 1,322 ft-lbf, 19.4-grain charge Muzzle velocity: 2,358 ft/s Muzzle energy: 1,544 ft-lbf Chamber pressure: 54,293 psi, Reducing copper fouling in the barrel even after high volumes of fire. 300 AAC Blackout Subsonic Loads - Gunloads.com 300 AAC BLACKOUT (Subsonic Loads) Barrel: 16" Twist: 1-10" Primer: WIN WSR Bullet Diameter: 0.308" Case: REM Max Case Length: 1.368" Trim Length: 1.358" Accurate 1680 Bullet weight: 230 grains. Be sure to store them away from anyone you think may try to use them in place of a crescent wrench. One of the benchrest guys I know asked how I liked my 300 BLK rifle. Accurate 1680 (AA1680) is a well-known double-base propellant with one of the fastest burn rates available. While the 300 BLK is easy (and inexpensive) to reload, Remington and AAC recognized that most people are not reloaders. Effective range for hunting is about 100-150 yards. 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. Per the powder manufacturers, we are only able to reprint the data they have provided to us. Subsonic rounds are particularly suited for use with a suppressed carbine. I use it for my 220gr subsonic 300 blk loads. My preference is the dial version, as they dont require batteries and also probably because Ive been using them on and off for most of my adult life. Oal 2.260 8.7 grains. Note: In the target above, the groups labeled 6.5 123 were shot with a 6.5 Creedmoor and are not relevant to this post. %PDF-1.5 The 300 Blackouts recoil is not significantly different from the 5.5645, and its price isnt prohibitively higher. I've seen a few posts and videos on using pulled 147 gr. Win 296 and H110 are the same, 4227 is not. Born in Boston in 1810, Winchesters initial foray into business was as a maker of mens shirts. Vol. Winchester 296 is a ball powder developed for large handgun loads. Anecdotal accounts from other shooters indicated this would provide the best accuracy with the 220 grain Sierra MatchKing (SMK). 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. WARNING: This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Their first model, the TAC21 houses a Remington M700 in an aluminum chassis, [], 308 Winchester Load Development I headed to the range to do some load development for my custom Remington 700 chambered in 308 Winchester with a 22 long barrel (my previous load was a NRA High [], Nightforce B.E.A.S.T. This website uses cookies to ensure the best experience possible. 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. It set the standard. Amp up your AK with these exciting accessories. <>>> The ability to shoot a wide range of bullets is a mixed blessing. : 1.831" Powder: 10.3 gr 13.0 gr Vel. I have some other common pistol powders like lil gun, bullseye, and titegroup but would like to hear what you guys use for the 147 pills. Using 125 gr prohunter, I really appreciate the updated data, I was working on subsonic loads and Sierra did the work for me. 01-26-2013, 07:53 AM #9 bmiller Boolit Buddy Digital calipers are typically cheaper than equivalent-quality dial calipers. Comprehensive load data for Winchester 296 reloading powder und technical specifications for this propellant. 12 gr. --2195 fps. In 2012, Hodgdon introduced the Copper Fouling Elimination reloading powder line, with the CFE 223. Hand load data for reloading .300Blk using projectiles from 110 grains to 230 grains with appropriate smokeless powders from Hodgdon, IMR & Winchester. Seeing the economic potential of the fast-growing firearms industry, Winchester began to assemble investors and secure venture capital, and in 1857 bought a controlling interest in the Volcanic Repeating Arms Company from two inventive gentlemen named Horace Smith and Daniel B. Wesson. I think 296 and 4227 are the same powders, not 100% sure though. The 300 Blackout cartridge is known for providing a wide range of bullet weights and velocities much to the chagrin of bullet drop compensating scope reticle designers. Such loads tend to deliver more consistent performance, resulting in fewer muzzle velocity variations between each shot. The chief difficulty in accurately firing 300 Blackout comes from learning to accommodate its pronounced bullet drop. The more we all know, the better organized and stronger the shooting and hunting community will be. The following has published data for both 220gr and 125 gr bullets for the 300 blackout Winchester 296, IMR 4227, H110, and Lil' gun. A Nosler 125 gr. Hodgdon H110 is identical to Winchester 296; it is simply sold under a different label. 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. I am confident that it would also be well suited to .454 Casull and other strong calibers. By cross referencing the group size shown on the target with the group size in the table, you can determine which group was shot by which load. 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. The two key features that make the 300 BLK excellent for the AR platform, make it difficult to work with ina bolt action rifle; a short case and use of both super and subsonic bullets. If you cannot find one powder in stock, the other may function as a substitute, using the same load data. So how does everyone find the stability of the heavier projectiles with the 1-8 twist rate? Most of the reloading manuals show lower data, I suspect this is related to the wide variety of ways to form brass for the cartridge and how that may cause an increase in pressures. Every product is hand selected by our editors. H110 and W296 what's considered "reduced load"? - Gunloads.com Old Craftsman 6-inch dial calipers passed on the author by his machinist father alongside a Wilson .300 Blackout case gauge. I have seen a few complaints from people with barrels under 10, but better stability was found when switching to a 1-7 twist rate. This one seems to reign as a favorite, but it isnt cheap. 7.3 grains of trail boss seems high even for max charge. Just sayn, I switched to LilGun for 220RN sub groups we t down to under 1 MOA cycles 26 bbl great. Winchester 296 is also recommended for 410-bore AA loads. Moderators:gds, bakerjw, renegade, bamachem, Post I have a 16 bbl. Example 220gr subsonic data there for h4198 and reloader 7 two thingsfirst not in anyway subsonicthey are high velocity. When it comes to recoil energy, assuming you're using an 8 pound rifle, the Blackout hits you less with 4.3 foot-pounds compared to the AK's 6.34 foot-pounds. However, nowadays, inexpensive, big-name mass-produced .300 Blackout is harder to find. There tends to be a lot of newer 300 blk owners, and re-loaders joining lately, and I believe that will continue to grow. Avg. H110 - Hodgdon Always start [] 243 Outdoors. If youre using an AR-15 or another self-loading platform, the powder charge must also be enough to reliably cycle the action, unless you dont mind transforming your AR-15 into a straight-pull bolt-action rifle. 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. You have a number of options. 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. A value-priced red dot with a full set of features. 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. Reloading .300 Blackout: Must-Have Materials | An Official Journal Of and 8 lb. 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. We were even close for a short time. Handloading The 7.62x39 mm (M43) - An Official Journal Of The NRA 220 sierras were stable to 150 meters with 1:7 twist. In my 16.5, X95 Sierra 220 grain RN with 11.2 grains of H110 WILL NOT cycle. The case manufacturer, Nosler or Jagemann (JAG), is listed on the table below. 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. We do not take backorders and our Tech Services team cannot take orders via email or phone. I'm setting up to start loading 300 Blackout. Both loads are with a 225gr. 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.