Re: Hornady 208 A Max for 300 RUM???
I am getting 3000 FPS with them using 93.0 of H50BMG OACL = 3.700" You will not get this much velocity with this load out of a factory stick. If I were using a factory stick I would use H1000 or RL25 and maybe RETUMBO and NOT H50BMG. I am also getting a BC of .671 in the real world with the 208 AMAX. Twist is 11.25x.
This is the bullet my 300 RUM likes best. I have not shot any game with them yet but I have shot several deer with the 178 in upwards of 3200 FPS between 338 and 510 yards. Even at high velocity they did fine. When I say fine, they did explode inside the critters. The lung/heart area was devestated. I would be leary of shooting anything bigger than a large mule deer buck with them.
Long range shooting is a process that ends with a result. Once you start to focus on the result (how bad your last shot was, how big the group is going to be, what your buck will score, what your match score is, what place you are in...) then you loose the capacity to focus on the process.