JDT Posted August 20, 2021 Report Share Posted August 20, 2021 I was just thinking today, with the increasing popularity of .22LR semi-auto AR15s, wouldn't it be brilliant if someone could be bothered to invest the time and money to develop a new .22 rimfire cartridge tailored to squeeze the most out of UK legislation for longer range (accurate / flatter trajectory) semi-auto shooting. I'm not talking seriously far, just a decent extended range to, say, around 200 yards quite flat. For UK semi-auto it would obviously have to be .22, and magnum to push the distance but imagine if it was designed from the ground up for mag feeding into an AR15 with a decent ballistic co-efficient as well, would be a great new little round. I know some builders are doing this with .22 WMR already, but with centrefire precision rifle seemingly getting a new 6mm calibre every month it would be nice to give our UK-specific limitation some love and attention! Wish someone like Eley would take up the fantasy challenge. Quote Link to comment Share on other sites More sharing options...
meles meles Posted August 20, 2021 Report Share Posted August 20, 2021 Sort of something like a .223" case with the rim stuffed full of priming compound? We could call it .223"RF. A whole raft of bangsticks out there already that can fire it with a small tweak to the bolt and firing pin... Quote Link to comment Share on other sites More sharing options...
meles meles Posted August 21, 2021 Report Share Posted August 21, 2021 Hmm, .22x45 Spitfire it is then... Quote Link to comment Share on other sites More sharing options...
ds1 Posted August 21, 2021 Report Share Posted August 21, 2021 17 WSM is/ was available. Seems about the nearest a rimfire has gotten to 223 REM. Quote Link to comment Share on other sites More sharing options...
BlueBoy69 Posted August 21, 2021 Report Share Posted August 21, 2021 If my memory serves me right, the .22 Spitfire, which had 22 Hornet-like performance, was based on the 30 Carbine case necked-down to .22? A quick check online and in reference books (Cartridges of the World) confirms this. Maybe there was a rimfire version too? The 17 WSM could be used as a necked-up donor case for what I shall call the '22 Super Magnum', but the performance is still going to be some way below even the 22 Hornet, and nowhere near the 223 Remington. Quote Link to comment Share on other sites More sharing options...
ds1 Posted August 22, 2021 Report Share Posted August 22, 2021 7 hours ago, saddler said: Nice - but wrong digits! ONLY .22 rim-fire was named as an exemption caliber when semi-auto rifles were banned Could be necked-up to .22, would be fast with a Hornady V-Max 35 grain .22 for the bullet. Might get better performance from a V-Max 55grain with .255 bc (g1). Volquartsen would just be a drop in barrel exchange from the 17WSM. Neck expansion and bullet seating would have to be done….carefully. Quote Link to comment Share on other sites More sharing options...
.jpg.0972b4e2bdf0b5a4109eb96f2b1b62ad.jpg)
(200x135).jpg.0fd0a94f065c6cb243fdff1b40e0819a.jpg)
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.