Hey every one. Now since ive been reloading for little over a year i though i would start molding some of my own bullets. Just for my 30-30 to start. I got the lyman 160gr 2cavity mold. I have the lyman big dipper casting pot and the thermometer, fux, and tin to add to my lead. The lead i got is for an old timmer at work thats been doin bullet molds for a long he said it only needs about 1% tin to bring it to rifle hardness. Moving on to the cold side of molding i have the lyman 4500 lube sizer and correct sizing dies for my barrel. And the lube ofcorse. what i need help on is do i need to gas check the round? I mean the only thing im going to use these round for is range time. The rest of the spec are: Marlin 336c iron sights .309 dia groves Lyman sizing die #2766477 Lyman bullet #311672 Lyman super moly Any help and advice is greatly aprecated. thanks.