Originally Posted by bamadawg2009
Ok guys Ive got a question about fireforming. When my 280 AI gets done at the smith and I start fireforming brass can I just use a standard 280 REM load set to COAL, or do I have to jam the bullets up into "engage" the rifling to get the pressure to blow out the shoulder. I hear different things all the time, like you need to fireform with a pet load or just any box of regular ammo will do just load up and pull the trigger. This will be my first AI rifle and I dont want to blow it up on the first trigger pull. THANKS IN ADVANCE.
I just completed two 280 AIs and there was a little difference in the AI go gauge and the 280 go
gauge but not enough to be a problem(The New SAMMI AI is .006 shorter) and I found that you
could chamber standard 280 ammo and fire form with very good results. In fact both rifles shot
standard 280 Remington 150 grain Core Locks well under 1/2 MOA while fire forming.
So the owner is hunting with the factory ammo and fire forming at the same time. We also
used factory ammo to break the barrels in on both rifles.
The F Class rifle will shoot 5 shot groups under 1/10 of an inch in the AI loads. And the sporter
weight rifle will shoot .200 to .300 groups.
We had no problems with brass while fire forming.
J E CUSTOM