Cartridge for Husqvarna RB sporting rifle (Black Powder Cartridge)

by Spud, Wednesday, October 10, 2007, 03:08 (4556 days ago)

Hello there,
I've just aquired a Husqvarna rolling block sporting rifle and need some help identifying the cartridge it's chambered for. It has a heavy oct barrel 31.5 inches long (marked Husqvarna on LH side, on top there is a large crown with the letters LH under it, while under the barrel - the serial number, a calibre stamp (?) of 15.4 and the letters HM and LLH). The sight is a 3 leaf with the two folding leaves marked 120 and 180 (meters ?). The action is colour case hardened and fitted with twin extractors. The two large action pins are locked in place using cap screws Sporting walnut stock.

Now to the cartridge - a brass 20 gauge shotgun cartridge trimmed to 1.875 inches fits the chamber nicely and the barrel has a 1 in 88 inch twist (8 narrow lands with wide grooves). I haven't slugged the bore yet but I would estimate it at about .60 cal.

The rifle is very nice original condition and I doubt it has been used much.

Have I got a black powder 20 gauge rifle ?
Any help would be greatly appreciated.

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