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270 grs.? I may have to cut back a half a grain or so. The shallow grooves of the Uberti '73 I believe are what is crippling my attempts at some sort of repeatable (OHMYGOD, A PUN) accuracy. My trapdoor has typical 19th century deep grooves for BP, and shoots pyrodex and wheel weights just fine, but it has been a frusterating exercise to do the same with the Uberti. Brian Pearce claims the replica action can handle 20.000 cup and liked 17.5/18 grs of 2400. I would like to squeeze some accuracy from this rifle.
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