The 44 Remington Magnum cartridge is loaded with a 0.429-caliber bullet, and a 44 Remington Magnum revolver has a bore diameter of 0.417-inch. Neither has a damn thing to do with 0.44 caliber.

New York, Aug. 28, 2020 (GLOBE NEWSWIRE) -- Reportlinker.com announces the release of the report "Global Small Caliber Ammunition Market:Focus on Caliber, Gun Type, Ammunition Type and End User ...

Those calibers fall between the current 7.62 mm and 5.56 mm rounds and include the .260 Remington, the 6.5 Creedmoor, and the .264 USA, as well as other variants that aren't available commercially ...