OK fella's, please don't laugh....

I saw a neat little Remington Semi-Auto in a small gun shop the other day. I think that the pat. date was 1911 (I think!). It was stamped .22 Remington. Can I chamber any other .22 in this; .22LR, .22long, or.....?
It was a neat little rifle, but if I can't find ammo for it......

Thanks!

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Doesn't look like it:

.22 Remington Automatic - Wikipedia

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Comment Deleted based on above post.

Sounds like you have found a .22 Remington Automatic. Proprietary rimfire cartridge, not interchangeable with any of the others of that time or today. The ammunition itself is now very collectible and highly priced when found.

Back in the late 19th and early 20th Century days every firearms manufacturer offered guns chambered for their own "proprietary" cartridge designs, and this became even more of an issue as smokeless powder loads began to replace the older black powder cartridges. Remington, Winchester, and others offered their own products and competition was pretty fierce for market share.

Many of those early cartridge developments have not survived in the marketplace. Since the 1920's or so there has been a movement toward standardization, and only the most commonly used rimfire cartridges prevailed (.22 short, .22 long, .22 long rifle). During the 1950's and 1960's there were a number of gunsmithing firms offering conversion services for some of the earlier rifles, but that is no longer a viable alternative (both due to expense and collector value of some of those early guns).

A very few of the early proprietary cartridges remain in limited production (such as the .22 Winchester Rimfire), but supplies are never certain and must be grabbed when they become available. Today, if a box of .22 Remington Automatic became available on the collector market it would probably bring a price just about equal to one of the original rifles (and the owner would be foolish to use it up for plinking at tin cans).

Thanks! I suppose, for the right price......

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Don't know if it would be worth the cost/effort, but I'd think the barrel could be removed and trimmed at the rear sufficient to allow rechambering for .22lr. The extractor groove would have to recut also.