I have a break open H&R in .204 Ruger and have been full length resizing since starting to reload. Been doing that since that was what my kit came with. But read alot about just neck sizing after the cases have been formed to the gun. Is just neck sizing really a better way to go and should be something that I am doing? Does it really increase case life and accuracy? Any help on this would be appreciated. I am getting ready to buy 100 new brass and want this batch to be done right from the start.