Newbie Question,
So i am about to start doing load development for a factory Rem 700 SPS Varmint in .243 and i have about a hundred new Win brass(50 prepped and 50 that still need prep done) and about 40 Win brass from factory rounds that have been fired in it. Am i better off only doing my load development with rounds that have been fire formed to my action or is it fine to do it with new brass?
So i am about to start doing load development for a factory Rem 700 SPS Varmint in .243 and i have about a hundred new Win brass(50 prepped and 50 that still need prep done) and about 40 Win brass from factory rounds that have been fired in it. Am i better off only doing my load development with rounds that have been fire formed to my action or is it fine to do it with new brass?