I found one of my Mosin boolits in my berm ,its a plinking load-Lee 150 gr 2 lube groove over 7 gr of longshot. The boolits measure .311 but the rifling isn't deep, should I go for a .313 or .314? Is that flame cutting at the base into the lube groove? I'm still trying to learn to load cast for a rifle, any advice is greatly appreciated.
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