Mossberg 402 Palomino Manual
Mossberg 22 LR Models and Specifications Mossberg 22 LR Models & Specifications *Photographic contributions would be greatly appreciated* Some production date changes and expanded information as per 'Chronology of Mossberg Firearms' found in a 1983 Component Parts Catalog Excerpts from a letter dated 1954 on rifling of Mossberg 22 lr rifles. STANDARD.22 CALIBER BARREL SPECIFICATIONS ON MODELS PRIOR TO 1951 'The lead was right hand, and all were made with a twist of one revolution in 16'. The grooves 0.084, lands 0.086 wide and 0.0025 deep, plus or minus 0.0002. The rifling concentric with the bore. The bore 0.217 plus or minus, 0.0005.
Mossberg 402 Palomino Parts
Mossberg 402 Palomino Rifle
Made with four or five grooves.' SPECIFICATIONS FOR BARRELS SINCE OCTOBER 1951 'Lead, one turn in 16' right hand. Grooves, eight. Diameter to top of rifling 0.2225 - 0.0005. Width of land 0.045 - 0.046. Width of Groove 0.045 - 0.046.' Model B Bolt action single shot rifle.