I have a old 1923 mosin that i would like to see shoot cast at some point, currently its being fed a diet of various jacketed bullets.
the bore on it measures .318 in the groves and .305 on the lands, it can shoot .308 diamater bullets with some degree of accuracy approximately 2-4" at 50 yards and with .311 russian bullets it will tighten that up to 2" and 4" at 100 yards,
the barrel was rusted pretty bad when i got it and is pitted pretty bad due to probably corrosive ammo and being in a house fire. the rifle did not get hot at all but did get a little wet and rusted in the fire.
now this rifle can chamber a unisized NOE .316 mold that measures in at .318 unisized. but i can tell the case is touching the throat in the neck aria.
if i wanted to try shooting cast out of this thing how could i go about opening up the neck? and would this bother my accuracy with jacketed bullets?
also what would i wanted to do for a bullet size, lube and preparation to get this thing to shoot cast?