.284 grand slams in 145gr.
Before the barrel swap it would shoot 160gr SGK with unbelievable accuracy. But the new barrel will not group them better than 1 1/2-2". Well let me rephrase that, it does not seem to like them pushed by imr 4831, another powder choice might have different results. Now the good news is 150gr core lokt store bought grouped at 1 1/4", so I always have a back up.