I just picked up a NIB Armalite AR10A from my LGS. The first time I had a chance to fire it was last Friday before the weather took a dump. It pretty much short cycled thru 3 twenty round mags. Dumps the empty cases in a neat pile about 5 feet away at 4 o'clock and bolt closes on an empty chamber.
I've seen some threads on 308.com that AR10's take about 200 rounds to break in and the guys at Armalite are telling me that 147gr ball is too light to break it in with. I've picked up some heavier loads, but the weather is freaking cold and I'm not going to be able to shoot this thing for weeks.
Any advice on how I can help this thing along with the break-in? It seems to me that the recoil spring needs to "break in" because it's a little too strong for 147gr loads. I'm wondering if leaving the bolt locked back while it's in the safe will help. I scrubbed the bottom of the bolt carrier......it has some rough grease like residue on it that I though might be dragging on the rounds in the magazine. Any other advice on how to make this sucker run on 147gr ball ammo is appreciated.
I've seen some threads on 308.com that AR10's take about 200 rounds to break in and the guys at Armalite are telling me that 147gr ball is too light to break it in with. I've picked up some heavier loads, but the weather is freaking cold and I'm not going to be able to shoot this thing for weeks.
Any advice on how I can help this thing along with the break-in? It seems to me that the recoil spring needs to "break in" because it's a little too strong for 147gr loads. I'm wondering if leaving the bolt locked back while it's in the safe will help. I scrubbed the bottom of the bolt carrier......it has some rough grease like residue on it that I though might be dragging on the rounds in the magazine. Any other advice on how to make this sucker run on 147gr ball ammo is appreciated.