This relates to my previous post. I have been in contact with Anderson for a 7.62X39 AR upper. Their stuff is sized (SAAMI) for mil-spec but, there is a good chance my current SKS lead bullet round will chamber. I've never loaded for an AR shooting jacketed never mind cast. If my existing SKS load feeds and chambers and the throat is big enough to release the bullet - would shooting an AR with cast WW bullets .003-.004" over bore size be foolish? Before buying a second set of 7.62X39 dies and sizing bullets smaller I'd like to first see if the AR likes the same load as the SKS. The existing die set has been modified for large-for-caliber bullets for the SKS.