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. Just sayn, I switched to LilGun for 220RN sub groups we t down to under 1 MOA cycles 26 bbl great. I haven't had much luck with Trail Boss in the Blackout for what it's worth. Smart and safe loader will back off the load and work it back up simply due to powder age and lot variation. It is also widely considered to be the powder of choice for .410 bore shotgun shells. Keep in mind that the benchrest crowd, the hot-rodders of this sport, feel the best accuracy is on the edge of stabilization. They first looked to the 7.6239 for inspiration. A crowd favorite for pig hunting, deer hunting and general subsonic fun with silencers, it remains a strong choice for many shooters. .300 Blackout, Small Rifle Magnum Primers? | Ruger Forum It was later followed by CFE Pistol in 2014 and CFE BLK in 2019. Thank you. Converting an AR-15 to fire 300 Blackout is as simple as swapping its barrel. The 1:7 twist worked fairly well with the heavier, 220 SMKs, with groups ranging from 1.082-1.477 MOA. New customer? Consult appropriate load manuals prior to developing your own handloads. Winchester 296 . Powders that have been tested and tried by others. I know, how about the virtues of a bow or crossbow? In fact hide all tools you value from such people.At some point in the .300-Blackout reloading process, youre going to need to be able to weigh your powder charges. As mentioned, it should NOT be reduced. The load data provided by Accurate Powders suggests a 16 barrel with 1:10 twist rate, Remington cases trimmed to 1.358, and Winchester Small Rifle primers. This could be Hodgdon H110, Hodgdon CFE Black, Accurate 1680, Reloder 7 or a variety of others. We are engineers, reloading enthusiasts and operate one of the most powerful ballistics calculators. Communism only made one thing that works, and capitalism can make it even better. gallantbullets.com May 3, 2020 #22 Pgohil Well Known Rokslider. You'll either spend less or shoot more. For this, you will need a powder scale. select rifle cartridge and then 300 AAC Blackout Lists loads using: IMR 4227 (subs and supers) W296 (subs and supers, however may not function some carbine systems with subs. Since my post back in Jan 2019, I have switched and lil Gun cut the groups in half.Sub sonic. ES -----174 fps. 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. Rounds were fed from a AICS style 223 magazine from Accurate Mag. Silhouette shooters claim it is the most accurate 44 powder they have ever used. Data from a POF 10.5" barrel, 1:7" twist.
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