they have a gas check and are prelubed, i got a hold of some imr 4895 for it to try.just need a starting point on how much to charge the case with.I did roll crimp for the 30-30 i originaly bought them for ,shot well, but were talking bolt action mil-surp now . I will continue my research quest or end up trying to sell them just seems they would work in a mosin but i am no lead bullet expert.Hate to have to take a loss on the bullets but if it wont work it wont work right?thanx guys.