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Old February 14, 2013, 08:34 PM   #13
Malamute
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Join Date: June 6, 2004
Location: Rocky Mts
Posts: 820
Unfortunately, no, nobody has really standardized the bore and groove dimensions. It seems even with one manufacturer they can vary a fair bit. I've heard of recent Marlins running .378" to .381". The late-ish Winchester 94s over the past 20-some years have run from .375" to .381".

Oddly, even with oversize bores, many guns seem to shoot fairly well, just not all of them. Cast seems to be more of an issue than jacketed in that regard.

I haven't priced factory ammo, I havent shot any in ages, and only then when it was cheaply priced, like surplus or aquired in a trade. Brass and dies, and one is in business.
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