Getting ready to cast for a Norinco SKS. .312 Dia. 160 Gr. Would a .30 cal. gas check be used for this bullet? A friend shoots these as cast, But in order to seat the gas check properly it will have to be ran through a .311 sizer. Simply pushing the gas check on the .312 without sizing would not be optimal would it?
How well will these rounds cycle in an automatic? Just fearful of bullets being jamed into the neck of the case. What do ya think?