02-16-2014, 08:21 PM
I recently built a bolt Grendel and went with a 1:10 twist barrel as I didn't see myself shooting bullets over 125gn in weight.
I wish I had gone with a 1:9 as the Lapua 108gn Scenars (and others in this class) will not stabilise in the 1:10 at 100m. They are stable at 200m but the group size isn't terribly good.
Go with a 1:9.
I wish I had gone with a 1:9 as the Lapua 108gn Scenars (and others in this class) will not stabilise in the 1:10 at 100m. They are stable at 200m but the group size isn't terribly good.
Go with a 1:9.