It was about half finished in that picture Bruce. I did finish it and shoot it about 20 times before it's new owner got it.
I proofed it with 100 grains and 2 balls. It didn't flinch. The most accurate load I found for it was 45 grains of 3F, and that was a fairly stiff load. Watch your pressures, they climb very fast in the small bores.
The breech plug was turned from a bolt with all except the top flat turned to match the diameter of the round barrel. I brazed a brass tang on the rear and the peep (Fully adjustable for windage and elevation) which was made using a Brass British shilling. was mounted on the flat.
To be honest, I built it for me. I was going to use it for squirrels. Last summer, I provided all the computer and technical equipment to an HBO mini series and ran across a construction crew working the movie, from California.
They were the first decent Californians I had ever met. One day they asked me to take them shooting. One of them had never fired a gun and to be honest, was fairly anti gun in his thinking.
I took them to my range. I took about 10 handguns, 2 shotguns, a couple of AK's and 3 muzzleloaders. This was one.
He loved shooting and burned up 1000 rounds in the AK's.....but his favorite was the little squirrel gun. I gave it to him as a gift.
When they left, I found a bag in my office. It had a dozen old pistols that they had been stashing away from different movies over the years.