Im going to put together a 243ai and will be shooting the 105 amax/105berger. Im going to buy a new Stevens for the action and want to know if I can use a short action and still seat the bullets out or will I need a long action? I really don't care which one, I just want it to feed good. I would also kinda like to use a DBM system in the future, what do you guys recomend for the metal? Thanks