I have an old German single shot I started tinkering on today. The only name on it is HUBERTUS, which appears under the fore arm, and inside the action. From what I have found, it is most likely made by Emanuel Meffet, in Suhl, Germany in the early 1900's.
The bore size is .375, and the rimmed case seems very close to, if not identical to the 38-55, in fact I shot some mild Unique loads in it today using 38-55 brass, and cases look normal afterwards.
The twist looked slow by eye, but I tried some cast 270 gr. HP's I had laying around, and sure enough, keyholes at about 25'. I tried measuring the twist, but my cleaning rod wasn't long enough! I will call it 1-30", so very slow. Loads using a much lighter boolit from an old Ideal gallery bullet mold hit point on.
Does anyone have an idea what the German designation for this cartridge might be, and what it produced for ballistics? Its a very light rifle, and I'd rather not stress it unduly, but it would be nice to get it to shoot to the sights.
Thanks in advance