My boss actually has one of those rifles, among other rare 2nd ww and Korean war era. He used to have a gun shop in Illinois back in the 60’s it was I believe, maybe early 70’s. But through the years he gathered up some of the most unique items I’ve ever seen.Hoffer-Thompson
I'm new to the forum and am glad to be here among experienced 1903/1903A3 fans. I hope to contribute something here; in fact,
I just read about the Hoffer-Thompson 1903 a few weeks ago in a book by Joe Poyer "The M1903 Springfield Rifle and Its Variations."
Here is the lowdown from the book:
The H-T had a .22 cal bore, but externally, the barrel had standard 1903 dimensions. It used a .22 caliber rimfire cartridge holder that was a little wider than a standard .30-06 cartridge case (The chamber was modified to prevent insertion of a .30-06 cal. cartridge). This allowed the use of most of the standard 1903 parts (bolt, stock...etc) to produce a training rifle at a low cost.