It can be a patience game that's for sure. I'm going thru it now with a 338 Lapua. Groups with factory American eagle 250gr were terrible. 3 moa with 6 inch flyers. So far loading 250gr SMK's over retumbo it's getting better but still only 1 moa at 200 yards. I'd like to be able to smoke groundhogs at 500 or more and that's not gonna do it so I'll keep burning powder and killing paper!
Ocw load development help
- Thread starter Nmbowhunter06
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DUSTY NOGGIN
Well-Known Member
those groups could be all load related , but some appear to be scope related ,parallax is out of adjustment ??
Nmbowhunter06
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It's not parallax I know how to properly adjust my scope but thank you. I got it figured thanks
DUSTY NOGGIN
Well-Known Member
you said new. i didnt know how new. no offence intended
got any pics of the 77.3,77.5,77.7,78.0.
Nmbowhunter06
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No offense taken I'm only new to the ocw method. The pic of those groups is in my original post.
m249
Well-Known Member
Do you have access to a chronograph? I find that using a chronograph for this works much better then just looking at groups. With the chrono you can see where the velocity is similar from each load.
Last edited:
tsyarnall
Active Member
77.5 and 77.7 looks like a place to work on. Also, looks like another node at 75.0 is possible.
