Why aren't there semi-auto .22 Hornet rifles in the UK?

Oh, my bad, I thought it was rimfire.

OK, so the follow on question:

People spent a lot of brain power coming up with MARS rifles so that they were (at the time) UK legal. Why hasn't anyone made a big .22 rimfire cartridge? Bigger than a 22WMR?
 
I mean it isn't unfeasible to make a more powerful 22rf, but you'd need a relatively large case to do it in order to keep working pressures at about 25ksi, plus need a powder that was bulky enough/low energy enough/not position sensitive to do it.
Could be done but the market would be absolute miniscule, and that is why it hasn't been done.
 
I would imagine because a rimfire case can't handle much pressure and very few people want a low velocity rifle in a larger calibre.

That's pretty well why they died out - squirrel and rabbit guns in North America mostly. As .22LR went smokeless and improved and the much higher-performance Hornet came along in the 1930s the need / demand for low-performance larger calibre RF cartridges simply died. I suspect the real change was early in the 20th century as smokeless powders displaced black and pressures rose - there were plenty of much higher performance small levergun and single-shot CF rifle cartridges around like 25-20 and 32-20 for those who could afford new rifles.

The RFs other than .22LR and short presumably survived as obsolescent cartridges which were still made on an occasional basis by the ammunition factories for existing rifle owners. People being so poor during the Great Depression years must have reduced the demand for more modern replacements especially in rural America. This was the era of the .22 Short, the lowest cost way to get small game onto the kitchen table - read American countryfolks' shooting recollections of the era and only 'rich folks' bought the more expensive .22LR. The larger calibre rimfires were presumably considerably more expensive being very low-volume products.
 
Cost. The .22 WRF (Winchester Rimfire) was a self-loading round with an enclosed bullet rather than a "exposed" heelbase bullet as with .22LR. Remingtom made a 5mm RF but I can't remember if this was available in a self-loading rifle.
 
Rimfires have, I think always been small bore rounds. (Although probably someone will be along shortly to refute that, so maybe I should say mostly always). The obsolete pin fire system was used in larger calibre pistols, but that died out for a reason. A few reasons really, when compared to more modern systems (such as rimfire and centre fire).
 
As a young lad I was given a Chrome plated Smith and Wesson .32 rimfire revolver pistol.
I wonder if that calibre would have been any good as a rifle.
 
Getting ready for the rabbit massacre tonight, I found in my ammo box, 7 X .30-20 rounds. I've never owned a 32-20, have no idea where they came from.
Grant.
 
Oh, my bad, I thought it was rimfire.

OK, so the follow on question:

People spent a lot of brain power coming up with MARS rifles so that they were (at the time) UK legal. Why hasn't anyone made a big .22 rimfire cartridge? Bigger than a 22WMR?
Maybe one is on its way - if this takes off….
🦊🦊
 
Who now in the UK has the financial wherewithal to shoot any semi-automatic rifle in the manner it’s intended to be deployed? Namely from the shoulder at a Club Christmas Match when competing in the crockery & tin can balloon “Mad Minute” shootout.

K
 
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