Three Foot Johnson Posted April 27, 2020 Share Posted April 27, 2020 By all appearances, this is a reg'lar ol' .25-20 case, but stamped "Savage 25-20 Hi. P." So, what does it mean? Hi Power? Hi Pressure? Hi Performance? Was it a hotter loaded .25-20 "magnum"? I found a couple references to it online, but no explanation as to what "Hi. P." meant. Recon I'll put it on the shelf with the rest of the odd cartridges collection. If someone has a current "Cartridges of the World", could you take a look and see if it's listed separate from the .25-20 Marlin, .25-20 Winchester, and .25-20 Single Shot, or perhaps mentioned in the descriptions of one of these? Link to comment Share on other sites More sharing options...
Jeb Stuart #65654 Posted April 27, 2020 Share Posted April 27, 2020 Hi 3 Foot, My most current edition is #5 (1985) There is the 25-20 listed as a modern cartridge, no mention anywhere about a 25-20 Marlin, or 25-20 High power. In the obsolete section there is a 22 Savage Hi power, but the case dimensions are completely different from the 25-20. Book also gives complete honors to Win for the development of the 25-20. Marlin is only credited with making rifles chambered for it after Win developed it. Jeb Link to comment Share on other sites More sharing options...
Michigan Slim Posted April 27, 2020 Share Posted April 27, 2020 None of my manuals mention it. Link to comment Share on other sites More sharing options...
Three Foot Johnson Posted April 27, 2020 Author Share Posted April 27, 2020 The book "Marlin Firearms" by William Brophy, probably the leading expert on Marlin firearms, claims UMC produced the .25-20 in 1893 for Marlin, who chambered it in their 1889, then in the new 1894 the next year, and then Winchester picked it up in 1895. He also says the 1889 .25-20's were not a standard production rifle, but were available in the deluxe version *only* with pistol grip and checkering in .25-20 on request. When Winchester picked it up, they changed the shoulder angle very slightly, so it wouldn't chamber in the Marlin, and called it the .25-20 WCF. Early Marlins are marked ".25-20 M", mine included. Original UMC/Marlin cartridge on left and the later Winchester on the right. Link to comment Share on other sites More sharing options...
J. Mark Flint #31954 LIFE Posted April 27, 2020 Share Posted April 27, 2020 It was a high pressure version of the round meant only for 1892 and the like, not older toggle link guns. There were similar versions for the .32-20, .38-40 and .44-40, though I do not know of headstamp differences in the latter cartridges. Link to comment Share on other sites More sharing options...
Sawhorse Kid Posted April 27, 2020 Share Posted April 27, 2020 https://www.oldammo.com/august11.htm Link to comment Share on other sites More sharing options...
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