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west5757 · November 8, 2012, 03:02 PM

I have a Sig 556 with a 1:7 twist. When I sighted it in I was all over the place with 55 grains. I got a box of 64 grainers and it made a lot of difference.

I was wondering if anyone has found the optimal weight for this gun?

November 8, 2012, 03:02 PM	#1
west5757 Member Join Date: September 10, 2012 Posts: 49	.223 bullet weight for 1:7 Twist Sig 556 I have a Sig 556 with a 1:7 twist. When I sighted it in I was all over the place with 55 grains. I got a box of 64 grainers and it made a lot of difference. I was wondering if anyone has found the optimal weight for this gun?