Just started one of these using Chambers parts & Rice .58 cal. barrel and using my walnut blank. The tang of the breech stands above the barrel about 3/32" and I have seen some that are humped up so a round groove was used as rear sight. That might be for fowlers but not needed if using a rear rifle sight.
Not being that familiar with these 1740-50 English rifles, should I file this down to the level of the barrel?
This is on an English Fowler by Dave Person.
I searched here for images but in the two posts I found, the pics were no longer available.