I am currently developing more loads for my pre 64 M70
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first couple of shots out of the barrel, grouped well, prone with a sling.
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shot well out to 300 yards, but, a 130 clocking 2950 fps blows primers. Found the new brass I was using were all over 200 grains a case!
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this was a great load at 300 yards, 150 grain Fed Fusion
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except for the fact I blew primers on half the case heads. With 54.0 grains IMR 4831 the bullet was moving 2801 fps, I cut that load by a grain to 53, while it shot great, it blew primers.
Screw that. Who said 3000 fps was essential for hunting? Do bullets bounce off animals if they are less than 3000 fps?
The latest loads I am going with, with a 130 gr Fed Fusion, 53.5 grains IMR 4831 moving just at 2875 fps. I want my loads to be less than 2900 fps because I think that will give me margin from blowing primers. And my 150 Federal Fusion, 50 1/2 grs is just at 2708 fps. Great accuracy with both, and no blown primers.
I getting to believe that those published velocity values we read are wildly optimistic, and are so for advertising purposes. Due to customer demand
that more means more, the velocity gets bumped up to keep the clown customer base happy. I remember reading in early Arms and the Man magazine about a 30-06 pushing a 150 grain bullet at 3000 fps. That was the in print standard. I can push a 150 grain 308 bullet that fast in a 300 H&H but not in a 30-06 case.