I considered piller bedding and freefloating the barrel, or buying a good stock but wanted to see what kind of shooter I could coax this factory rifle into first, then add the improved or new stock and see what effect that has, then hopefully tighten the group by adjusting jump. Any stock suggestions, I like the McMilllan and HS any opinions?
I read an article about OCW after ladder testing at 7mm Rem Mag Load Dev Part 2: Audette’s Ladder Test « Precision Rifles & Handloading
It says to shoot 3 round groups of varying powder weights of .3gr increments using the promising ladder test nodes. I will be shooting these tests at 500yards, from a led sled, prone position.
From the ladder tests I have chosen 4 combinations of bullet and grain to OCW:
160gr Sierra SP, RE22, 61.9-63.4gr (12 bullets total)
168gr. Berger VLD Hunting, IMR4831 63.6-65.1gr (18 bullets total)
168gr. Berger VLD Hunting, RE22 63.6-65.1gr (18 bullets total)
175gr. Sierra SP, H4831, 61.9-63.4gr (18 bullets total)
I am running the OCW round of testing this weekend.
For those that wanted to know, here are the ladder test velocity graphs. I was seeking a fairly stable fps (2-4 shots) in conjuction with the promising nodes. The Sierra 160 gr. ladder test showed about a 10" dia. group for all rounds fired. Even though the Sierra 160 grain did not show a stable velocity group, I will be OCW tesing that bullet/powder using the higher, 61.9-63.4grain charges. It looks like a n accurate round based on the smaill "ladder" overall verticcal range. NOTE: the 168gr. Berger VLD Hunting, RE22 ladder test is to be done 1st thing this weekend. No data yet!
"They say that the best weapon is the one that you never have to fire. I respectfully disagree! I prefer... the weapon you only have to fire once."
Tony Stark (a hunter?)