Yeah, those big bores usually shoot amazingly well.
My AHR 9.3x62 is a solid inch or better gun with 250 NAB's and JB's load.
The M-70 .375 H&H shoots tight groups, too. That was the reason for saving the New Haven barrel, even though it was way too heavy. They shoot too good to replace and my smith didn't want to cut it down because of the sight holes. He said the cutter would start chattering when it got to those holes. The 24" to 21" decision made a big difference.
DF
