OAL and case tension

DaG

Private
Minuteman
Sep 5, 2008
9
0
Knoxville,TN
Hey All,
Total Noob here. I have a factory rifle and to get decent accuracy I must load long. I'm currently at 2.900 OAL and 2.940 puts me into the lands with 175 SMK's. I would like to stretch out to 2.925 but when I measured how much bearing surface was in the case neck, it mic'd out at .165 What can I expect if I do this? Thanks in advance.
DaG