I was recently bequeathed a Colt New Frontier in 22LR and I’d like to acquire a 22 mag cylinder. The Blue Book talks about some that can take a 22 Mag cylinder and some that can’t. The brief explanation of which ones can and which ones can’t is ambiguous. Can someone help me figure out if mine can? It was made in late 70’s or early 80’s. It has the black grips, case hardening on the frame, with a blued 6” barrel. Thanks!