About a month ago I broke the Jag off in my T/C plains rifle. I had some others people have tossed in my box at one time or another.
Set up the vice in my drill press drilled #27 holes in all the broken jags. Taped them 10x32, went to the hard ware store and bought a packet of 10x32 set screws for about 35 cents. I now have 5 or 6 jags for the 50 and 3 or 4 for the 54.

Al