My M77VT in .243 likes the little 55 BTips too, the best of any bullet I've tried - a very picky rifle. 4050 fps is not max but is highly accurate and shoots flatter than any .224-caliber varmint hunting load. My throat is showing signs of wear but the rifle still shoots well. I'll probably sell the rifle before I get around to re-barreling it. The stock is the best thing about this rifle IMO - my M700s are less finicky.
Let's see:
2 ea - .25-20 BN
1 ea - .25-35
1 ea - .25 Bullberry
1 ea - .250/3000
1 ea - .25-06
2 ea - .257 Weatherby
Yep, that's a good start on quarterbore cartridges.
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