Sizing the Touchhole

When choosing a thread size, consider whether the option may exist to switch between percussion and flintlocks of the same plate size. Large Silers interchange as do L&R Late English and the L&R Leman, Mantons and Durs Egg locks. If you are doing this, then choose a 5/16”x 24 thread. This way you can use a 5/16-24 touch hole liner and enjoy the larger hole size you really need for the percussion drum.