Hey guys, I am having mixed reactions with today's load development and I am hoping someone can help me figure this out. The gun is a ruger m77 hawkeye, 300 win mag. Shooting winchester brass, berger 185s, retumbo, and federal 215m primers, loaded to 3.400 OAL. After testing 8 different loads the max load as per Bergers manual of 79.5 gr shot the best with an SD of 6. Shooting at 100 yards with about a 7-8 mph crosswind. The group confused me. Elevation was spot on all 3 shots but they all 3 varied right around 1" total left to right. Can a wind that low really push those bullets that much at 100 yards? I find it hard to believe but I've been known to be incorrect at times. Also, all 3 shots felt solid as I pulled the trigger. If anyone has some wisdom to share with me I'd like to hear it. If I have to do more load development than so be it but I don't want to be chasing my tail over this if it's not needed. I plan to use this gun to reliably shoot out to 700-800 yards max so that's where I'm trying to get. Thank you.
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Load development problems. Ruger 300 win
- Thread starter coych
- Start date
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mountainman56
Well-Known Member
If the wind was gusting I would say it can definitely be responsible. I would try those loads again on a calm day.
Canadian Bushman
Well-Known Member
Ive shot some pretty aweful 100yd groups when there was a lot of wind and mirage. They have an effect no matter what the range.
HARPERC
Well-Known Member
I plugged some rough numbers into the G7 ballistic calculator at the top of the page, and 0.4 inches is roughly your wind.
Kennibear
Well-Known Member
A cross wind of 8mph is more than you think. If you subtract HarperC's 0.4" from your 1" that is a 1/2 MOA group which is pretty good. That's why wind and not distance is often the limiting factor on long shots.
KB
KB
