My Mod 77 7x57 is trying to shoot. My Lapua factory with 170sn does under an inch(rounded groups too) for the first three, then next 2 open up group. Skinny barrel. I measured its COAL ogive/oal with a Bullet comparator and got 3.730" (av) my handload with 150 NP seated .020 off the lands ogive/oal measures 3.68 and I get 2 in and one out (3 shots) maybe the 2nd or third, but 2 close and one apart, (wide 1 3/4", 2 closest 1/2"). Do I seat them deeper or further out? I have have plenty of magazine length. I can't get 3.730 with the 150 w/o jamming. Best I can get is 3.715 (again Bullet Comparator measure. I don't want to burn up more components than necessary, of course.
The good thing is "this is the first 7x57" I've owned that was accurate (under 2") with anything!!!
Started over 25yrs ago with a Mod 70FWT, later another Mod 70 FWT, then a Mod 700 classic, and an old M93 or 95 ( I for get) that shot factory S&B 173 but nothing else. This old tanger was a Safe Queen, even had an older Leupold 2.5x8 with friction dials (that actually give the correct dialing!)
Its trigger is crisp, no takeup, but 4# measured. All I did was take rifle apart, cleaned/oiled, put back together, used Loctite on the action screws gorilla tight front back with middle snug. Tightened scope bases/rings. That's it. Old School baby! I just forgot whether to seat out or deeper???? Arrgh. Help
The good thing is "this is the first 7x57" I've owned that was accurate (under 2") with anything!!!
Started over 25yrs ago with a Mod 70FWT, later another Mod 70 FWT, then a Mod 700 classic, and an old M93 or 95 ( I for get) that shot factory S&B 173 but nothing else. This old tanger was a Safe Queen, even had an older Leupold 2.5x8 with friction dials (that actually give the correct dialing!)
Its trigger is crisp, no takeup, but 4# measured. All I did was take rifle apart, cleaned/oiled, put back together, used Loctite on the action screws gorilla tight front back with middle snug. Tightened scope bases/rings. That's it. Old School baby! I just forgot whether to seat out or deeper???? Arrgh. Help