I recently purchased a Winchester '94 "Trails End" in .45 Colt that I plan to use for Cas Shooting (if and when the oppertunity arrives). Not even dreaming that I might be able to use my Marlin lever action in 30 30 Caliber. I have not seen any posts refering to the 30 30 anywhere on this web site So I am asking are 30 30s legal for Cas shoots?