Henry Bowman
Senior Member
Has there ever been a rimfire round made in a "rimless" configuration (like an ACP cartridge)?
Rimfire rounds (like .22LR) are hard to feed with a "push" spring magazine holding more than 10-20 rounds because of the larger diameter rim. If a case could be made with a groove for extraction, but with the "rim" no greater in diameter than the body of the case, we could have small caliber, low cost, easy to feed ammo. The primer material would be spun into place the same way current rimfire ammo is made.
Has this ever been tried?
Rimfire rounds (like .22LR) are hard to feed with a "push" spring magazine holding more than 10-20 rounds because of the larger diameter rim. If a case could be made with a groove for extraction, but with the "rim" no greater in diameter than the body of the case, we could have small caliber, low cost, easy to feed ammo. The primer material would be spun into place the same way current rimfire ammo is made.
Has this ever been tried?