Lots of hours spent surfing the net to find those 2. Got my eye on another M77 international in 275 Rigby. Bullethead you will have to let us know how your Buddies 275 shoots. I have another #1 RSI in 7x57 that shoots great.
Yeah,slightly over an inch. 3 of the shots in the 5 shot group were under and inch.
We got the 260 and 6.5x55 under a half inch. I'm positive we can get the .275 at 3/4" or a little better.
Please post how yours does when you get it to the range.