I am using the Variflame Primer Adapter which use a machined brass 209 housing that is loaded with small rifle primer and are reusable, these work with the stock TC breech plug. I had been having a problem with my firing pin hanging up on occassion, these seem to have ended the problem. I purchased them from E. Arthur Brown the kit comes with 10 reusable adapters and the needed tools. Besides seeming to be cleaner the small rifle primers are cheaper than the 209's.