Interesting. That is the first I have heard of it.
I was very pleased with the shoosting of the Hopkins & Allen I got. I took it to the range to shoot along side the 38 S&W LemonSqueezer I have.
(You need to Login or Register to view media files and links) (You need to Login or Register to view media files and links) First, I shot the revolver at 25 yards to test the Remington 38 S&W Express ammo I bought. The gun shot high and left, but still landed on the paper (barely). Then, I tried out the rifle. At 25 yards, it shot a little low and right. I moved the target out to 50 yards, and the group was about 3". Not bad for a rough bore like that.
(You need to Login or Register to view media files and links) I put up a shoot and see and adjusted the sights. The rear sight is just loose enough to slide back and forth by hand without a drift punch. I elevated to the top of the ramp and eased it to the left a little. Again, it shot a solid 3" at 50 yards.
(You need to Login or Register to view media files and links) The gun shoots so softly, it felt like shooting a .22. Very smooth. Trigger is crisp, about 7 lbs I'd say. Sights are surprising visible for being a mashed up front sight and a deep V rear sight. However, they were quick and easy. When I got home, I cleaned out and had the expected light leading with some flakes. I cast the muzzle with some Cerosafe and the results were a little surprising.
First of all, on another forum, it was suggested that the 38 S&W were hand stamped, which I suspected, and therefore the caliber was done after manufacturing. I also have not found any reference to Hopkins & Allen Arms (post 1901 re-org) making a rifle in 38 S&W. Finally, the loose rear sight and very strange front sight make me thing this was originally a 922 .22 caliber, that was rechambered for 38 S&W.
The bore dimensions are unexpectedly tight at the muzzle. Although the rifling does run out at the last .25", the bore mic'ed at .350 and the grooves at .354.