I got to wondering since my musket is one of the ones that supposedly had the breech threads incorrect. So I looking into confirming one way or another if my musket chamber was incorrect. A buddy suggested a USB borescope. I checked it out on Amazon and yup, for about $16 you can get a bore/endoscope that will hook to your android phone via usb. Here's what I saw-
Colt chamber
Smith chamber
For a couple bucks and an android phone, this ain't half bad.....
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