greyling22
Member
My brother has a blackout that I'm loading for for him. I'm using 17 grns of h110 under a 125grn sierra bullet that (according to load data) should be generating 2100 fps. A nice supersonic load. It works great. He has a carbine gas system and carbine buffer/spring.
I liked it so much I bought a complete upper http://www.shop.masdefense.com/16-300-BLACKOUT-BARRELED-UPPER-GTHD-15-KEYMOD-SALE-163GHDERBU-LD.htm for myself. However, mine is short stroking. It ejects brass about 3:30 and some at the 5:30 positions, sometimes cycles and picks up the next round, sometimes it rides over the next round. It was short stroking every time with the H2 buffer in it, and maybe 30% of the time with a standard carbine buffer.
So probably I should have got a pistol gas system, but I didn't want to be overgassed with the supersonics I am shooting. But I can't fix that. Any other solutions? super light spring or buffer? drill out the gas port? sell it, possibly for a loss and start over?
I liked it so much I bought a complete upper http://www.shop.masdefense.com/16-300-BLACKOUT-BARRELED-UPPER-GTHD-15-KEYMOD-SALE-163GHDERBU-LD.htm for myself. However, mine is short stroking. It ejects brass about 3:30 and some at the 5:30 positions, sometimes cycles and picks up the next round, sometimes it rides over the next round. It was short stroking every time with the H2 buffer in it, and maybe 30% of the time with a standard carbine buffer.
So probably I should have got a pistol gas system, but I didn't want to be overgassed with the supersonics I am shooting. But I can't fix that. Any other solutions? super light spring or buffer? drill out the gas port? sell it, possibly for a loss and start over?
Last edited: