TC's Hot Shot Nipple Fits #11 Percussion Caps Hot Shot Nipple for #11 Cap (1/4" x 28 thread) for most T/C Cap Lock rifles. Uses #11 Cap (Except Scout, Cherokee, Fire Storm & Seneca). This heat treated stainless steel nipple will provide a more even and consistent flow of pressurized gases from the nipple into the ignition chamber. It will virtually eliminate hammer blow back by venting excessive gases through the side ports. (Please Note - Not recommended for under-hammer rifles or cap & ball Revolvers). For more Muzzle Loading Accessories Click Here.