Thank you.

The underside of the barrels have proof marks plus either 11 or 17, I can't say. The 11 might be the bore, I can't tell what the 17 would be except for this:

We shot one of the rifles with 2 1/2 drams and the balls crossed at probably 20 yards - we were shooting at 50 yard targets and the bullets were problably 5" apart but crossed, however they were at the same hight and about 2 inches above the point of aim. When we shot with 3 drams the distance between the balls was greater.

The bores are deeply rifled, (10 lands) not oval.

I hadn't thought to contact H&H but I will.

Any other thoughts would be appreciated

Bob Olson