Of course i did some Flash Hole measuring

Numerous Treso/Ampcos, they measure right on their Advertised .028, I have an Old White Breech Plug for Musket Caps, it is a HUGE .041, This one is JUNK, or a Good Candidate for a Vent Liner Mod
Lehigh Vent liner is .031
My Buffalo Arms Platinum Lined is a Tiny .024
Anyway, The Pin Gauges Work AWESOME! Much Much better than my Old System
