I have a T/C thunderhalk I use 80gr of pyrodex with a 250gr shock wave (T/C) and I keep groups of 2 in. In mine.... I wanted the 209 kit for it but T/C don't make em anymore ( I had a deer duck my shot at her ) but I'm gonna try the musket cap with a Flame Thrower nipple see if that brings up the ignistion timing down to a sec or so..... Thanks for my 2 cets