Ok, so I have several boxes of .280 Remington ammo sitting here. I already learned that they can not just be fed through my .280 Ackley because when fired the primers lift up, and the brass grows at the wrong place causing case head separation on the next firing. I could remove the bullets, dump the powder, remove the primer and load them all up in a way that the bullet is jammed into the lands so when I fire form the case will be held in place by the bullet and I will not get head separation. Now, here is the part that I think might be stupid. What if I take my inertia bullet puller to the range and give each factory round enough whacks so that the bullet will be jammed, and then fire them? They are 140 Grain Core-Lokt from Remington. This would save me a whole bunch of time. Basically, do you think that the factory Remington stuff is too hot to jam into the lands? I don't have a die that I could resize the necks with without also removing the primer and by the time I do that I'd be better off finding someone with a .280 and giving them the loaded stuff and just buying some bulk brass. This is my dilemma.