I was fire forming the rest of my 22-250 brass yesterday using a lot of 77s that I had left over from an old AR that I sold. I bought 600 of them because they shot well, but after losing a couple coyotes due to lack of expansion at low velocity I gave up on them. I dug them out the other night with the intention of using them solely as burner projectiles. Yesterday, I had the magnetospeed out while I was shooting so I got a velocity on them and set up plates out to 780 or so. My fireforming loads are 38.5gr 4831SC with an OLD win LR primer, 77TMK touching the lands. Velocity was just under 3100. It printed sub half minute on paper in multiple groups, but nothing incredible. I started shooting groups at each distance and was pretty surprised at how well they did. Everything was well under MOA. At 668 yards I shot a group that was right around .25 MOA. Mind you this is out of a savage, factory trigger, weaver rail, choate stock, gen 1 PST, with a bartlien barrel. So, instead of letting the 77s collect dust I thought I might use them in my 7.7 twist 22-250AI for mid range coyotes and steel. Has anyone ran these things hard? I think I'll be around 34-3500 fps depending on ocw. I don't care if they destroy fur as long as they kill what I'm shooting at. I also was wondering is they have issues turning to dust at a certain speed? I figured I could save a lot of barrel life if everyone has had piss poor luck with them.
467 Yards 10 mph wind 9:00
668 yards
Any information on the subject is much appreciated.
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467 Yards 10 mph wind 9:00
668 yards
Any information on the subject is much appreciated.
Sent from my iPhone using Tapatalk
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