02-18-2012, 07:05 PM
I'm very close with 13.3 grains of AA2015 behind 160 grain Hornady round noses. I'm using fired formed IMI brass and Rem 9 1/2 primers.
There was another member here that said a similar load was cycling his upper but I believe he was running a 18" mid length gas system. I'm running a 20" rifle length and the load throws the bolt enough to eject about 50% of the time but not enough to pick up the next round. I might bump the charge again but I'm already averaging 1050 fps. Once the paperwork for my 30 cal. can clears I hope the increased pressure through the gas system will be enough to cycle it reliably. Unfortunately I have about 6 months to wait to find out. If anyone in the Austin area has a 30 cal or 6.8 can and is wiling to let me try it maybe I can test the load sooner.
There was another member here that said a similar load was cycling his upper but I believe he was running a 18" mid length gas system. I'm running a 20" rifle length and the load throws the bolt enough to eject about 50% of the time but not enough to pick up the next round. I might bump the charge again but I'm already averaging 1050 fps. Once the paperwork for my 30 cal. can clears I hope the increased pressure through the gas system will be enough to cycle it reliably. Unfortunately I have about 6 months to wait to find out. If anyone in the Austin area has a 30 cal or 6.8 can and is wiling to let me try it maybe I can test the load sooner.