Well
I am not very clear about what you are trying to accomplish. Do you want something that is used for shooting targets, shooting varmints, or hunting big game?
For big game velocity kills, bore diameter kills, and bullet weight kills. If you are using a 6mm on big game, I would look for the most velocity. For accuracy, one of the smaller 6 mm will fill your needs.
Based on your statements, you really don't need anything new.
Last edited by RinB; 03/20/17.