The rifle in question may or may not have an aftermarket touch hole. It is SS and has a screw slot as opposed to a hex, it is also deeply chamfered on the back side. I would guess that the touch hole is smaller than .062 but I haven’t put a pin gauge in it to verify.

I’ve never had it misfire, probably only shot it 30-40 times but it hasn’t failed to go off. I may just be filling the fan too full of priming powder honestly.