In the back of my safe I have stored an M1 Carbine (made by IBM) for the last 20 years that I would like to experiment with shooting cast lead boolits. I am not sure what mold to buy and if it needs to be gas checked or not. I just want to do a little plinking and target shooting with it so nothing serious. (I don't plan to use it for deer hunting) I also don't know what powders bring optimal loadings for this. I have quite an array of powders, including an 8 pound jug of T-680 that I bought years ago from Thunderbird Cartridge Company that may have been originally designed for the M1 Carbine. So, mold and powders recommendations for the M1 Carbine?