doublegunshop.com - home Forums General Discussion Classic & Custom Single Barreled Sporting Rifles @ doublegunshop.com .250 Roberts

Dr. Mann had 200 long 30-40 cases made at Frankfort Arsenal these were headstamped "F.A.1-12". They were necked to .25 caliber and the finished length was about 2.750". This is what the first rifle was chambered for. When out shooting woodchucks Niedner shot one and brought it back using both hands to hold it Dr. Baker said that is some Hamburger making rifle, the name stuck.
This rifle was later rechambered to the regular 25-Niedner-Krag.

The two cutaway chambers are both made for the long hamburg cartridge and one of the original cartridges with a base-band bullet is in the chamber.

Michael, Did the later version drop the male dovetail on the receiver ring? I like the Mann-Neidner mounts. gary

Of the five Mann-Niedner actions made only two have the male dovetail on the receiver ring. I now know were they are all with the exception of the original wooden model. Last seen sitting on a doctor's desk.

Does anyone have diagrams or photos of the cartridges discussed here? I would like to be able to compare them with the more common varieties.