I've got an AR10 in 6.5 creedmoor that shoots about 1-1.25moa with Hornady 140gr ELDM. I got several cases of S&B 140gr FMJ for ultra cheap from a buddy, and my rifle only shoots about 3moa with that ammo. However, when I shoot both factory loads over a chronograph the S&B has an SD of 6-8 and the Hornady an SD of 14-16. I know SD isn't everything, but it got me thinking.
So, my question is, why not just replace the projectile on the S&B with a better projectile?
What I'm thinking is pull the projectile with a cam lok puller and then seat an ELDM in place of the old bullet. I can see the difference in bearing surface between bullets leading to pressure issues. Also, might need to run cases through a neck die to get enough neck tension to work in a semi-auto.
Has anyone here given this a try?
So, my question is, why not just replace the projectile on the S&B with a better projectile?
What I'm thinking is pull the projectile with a cam lok puller and then seat an ELDM in place of the old bullet. I can see the difference in bearing surface between bullets leading to pressure issues. Also, might need to run cases through a neck die to get enough neck tension to work in a semi-auto.
Has anyone here given this a try?
