I took my 460V S&W X-frame cylinder and sent it off TK Custom to be altered to take their stainless steel moon clips. I got the 45 ACP moon clip design because when using Starline brass the 45 ACP moon clip you can also use it for 460 Rowland, 45 Super and 45 Winchester magnum cartridges in my 460V revolver. I used a Cylinder and Slide extra long firing pin to make shooting 460 S&W magnum, 454 Casull, 45 Colt, 45 Schofield able to be shot without moon clips. My favorite SHTF revolver project gun.