22 auto is a wider and longer case than the 22lr, rim dia is .31 versus .275. this was done deliberately to stop ammo interchange as back then BP was still used in the 22 lr and that would go poorly...
Type: Posts; User: Marty Henry
22 auto is a wider and longer case than the 22lr, rim dia is .31 versus .275. this was done deliberately to stop ammo interchange as back then BP was still used in the 22 lr and that would go poorly...