Originally Posted by xphunter
Originally Posted by Nestucca
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Shot at 400 yds to fine tune and settled at 69.0

Getting pretty tight there!
Chambering and bullet used?
It’s A 77 mark ll that was a .300 Winchester that shot in the .3s throughout its life until I had a new barrel installed and rechambered it in 7 mm Remington Mag and rebedded. I’m shooting 180 vlds in front of retumbo at 2900 fps and have shot it out to a mile. The group is 1.266”s which puts it in the .3s as I saw at a hundred yards during the load work up and barrel break in.