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Rifles, Reloading, Optics, Equipment
AR15/10 Rifles
8.6 Blackout build. First round, no ejection
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<blockquote data-quote="44-40" data-source="post: 2850584" data-attributes="member: 126985"><p>Yes I got the AR also, and made up hundreds of brass casings, neck turned, and bought large quantities of 300 gr Bergers and 300 gr SMK. The 8.6 Blackout has been a hard caliber to like for me. Did a lot if testing with bullets. And finally warmed up to it a bit with both 300 gr bullets. </p><p>The barrel likes 15.8 gr of IMR 4198 300 gr Berger average velocity for 10 shots 1041 fps 9.4 S/D ...low S/D important to longer shots 2.880" COAL. Probably work at 2.8" I have a modified AR 10 will feed 2.940" the first 3 went into .3" at 70 yds the range I randomly chose that day to stay in the shade. </p><p>15.8 gr of AA 1680 300 gr SMK 2.750" COAL is also accurate.</p><p>1680 gives larger S/D generally. </p><p>15.8 grains of AA1680 or IMR 4198 both work with the 300 gr drop to 15 grs for everything in the 250 and under and stay subsonic, depending on a bunch of variables...but these two 300 gr bullets and 2 powders leaning to IMR 4198 are accurate and consistent, work the action and lock back the bolt. I did drill out the gas port.</p><p>Copper suppers and subs have not been very accurate and larger S/D and low super velocities were unimpressive. For me its the 300 gr bullets subsonic. Got a bunch loaded to shoot in the next few days.</p></blockquote><p></p>
[QUOTE="44-40, post: 2850584, member: 126985"] Yes I got the AR also, and made up hundreds of brass casings, neck turned, and bought large quantities of 300 gr Bergers and 300 gr SMK. The 8.6 Blackout has been a hard caliber to like for me. Did a lot if testing with bullets. And finally warmed up to it a bit with both 300 gr bullets. The barrel likes 15.8 gr of IMR 4198 300 gr Berger average velocity for 10 shots 1041 fps 9.4 S/D ...low S/D important to longer shots 2.880" COAL. Probably work at 2.8" I have a modified AR 10 will feed 2.940" the first 3 went into .3" at 70 yds the range I randomly chose that day to stay in the shade. 15.8 gr of AA 1680 300 gr SMK 2.750" COAL is also accurate. 1680 gives larger S/D generally. 15.8 grains of AA1680 or IMR 4198 both work with the 300 gr drop to 15 grs for everything in the 250 and under and stay subsonic, depending on a bunch of variables...but these two 300 gr bullets and 2 powders leaning to IMR 4198 are accurate and consistent, work the action and lock back the bolt. I did drill out the gas port. Copper suppers and subs have not been very accurate and larger S/D and low super velocities were unimpressive. For me its the 300 gr bullets subsonic. Got a bunch loaded to shoot in the next few days. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
AR15/10 Rifles
8.6 Blackout build. First round, no ejection
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