Hello all, building a .300 PRC long range rifle well piecing one together have a MPA Matrix chassis being made at the moment and don’t know which long action to use? This is my first custom build so kind of lost, would like to be able to use prefits with this setup, bolt lift angle don’t matter much, not sure if I want to use AW mags or not help me with that decision also if you could. Appreciate the suggestions!