1816 Question

[apstek]

A couple more pics of the nipple and insert.

[Eggman]

Well Apsek let me wander out on the pond for a bit and offer a couple of observations (speculations). That nipple you displayed looks a lot like the puny old 8X32. I'm wondering if the breach hole might welcome the more masculine 20X18 (see photo). That translates to a 5/16" hole. Could you not tap the hole for this bigger nipple (maybe a bit of fleshing out too)? I can sell you this more manly nipple if you trek that direction.
Jonk you may want to comment again. I apologize to all you skilled machine guys out there.

[gemmer]

Not trying to hijack the thread, but how was that small raised section of the breech directly below the nipple(where it seats) created? Always wondered about that.