So as I have posted in some of my other threads, you could tell I am a Barnes TTSX fan. However, I did want to try the Bergers in 300 RUM. I loaded some 185's up with 94 gr of Retumbo and seated the bullets @ 3.600" like the rest of my loads. I shot 2 groups of 5 shots and got 4" groups. Obviously a huge problem. I want to give them a fair chance so should I seat them taller? My OAL is 3.808 with them in my OAL gauge. Would 3.700" make that much difference?