I am wanting to make up some loads for a .300 Win.mag. using the Nosler 165 gr. Accubond,Lapua brass,Fed.GM215m primer,and H4831sc.This will be shot from a 25" Hart barrel.Can anyone comment on this combo?If so,what is a safe max powder charge?I know that every rifle is different,just ball park.I am hoping for 3185-3200 fps.Is this velocity out of the question? Thanks, Jimmy ps:can get this using Ramshot Hunter,but I want a denser load and a Temperature insensitive powder.Have tried H-1000(up to 84grs.)but it is to slow.I know RL-22 would work,but don't like the velocity swings in different tempts.