If a .22 LR rimfire case were to be loaded with an inside lubed bullet, instead of the heel type bullet, what would be the proper diameter?

It seems that it would be very close to the new .204 calibers but I am not sure.

Any opinions/

i have an old marlin lever action rifle with an octogon barrel,the only thing on the barrel is last patent date mar. 1 1892.i am haveing a hard time finding out the correct caliber?17 rimefire or 32 rimefire.are there any of these shells still around?

It won't be a .17, that's for sure. There were any number of rimfire cartridge 100+ years ago; .32 sounds vaguely familiar. Did you slug the barrel to get the groove diameter? That would help.

It might be a .25, .32, .38 and possibly .44 calibre. There were a few other sizes too, but they aren't as common.

Bye
Jack

WAGNER95696,

The diameter on the heel of a .22 Long Rifle bullet is .213+ -.001 or so.


bullridr1,
What you might possibly have isa '92 Marlin .32 caliber. This rifle came complete with 2 firing pins that could be interchanged for either rim fire or center fire cartridges. If it is a .32 the only currently available cartridge that would work is the .32 Short Colt centerfire cartridge. It will also use the .32 Long Colt but that's been out of production for at least 20years although you may still find some cartridges at a gun show(s).

There are 2 different threads on this very subject under the Marlin Model 39's category. http://www.shootersforum.com/forumdisplay.htm?f=63

Good luck,
John

WAGNER95696:

Figured right...if the .22LR case used an inside seated bullet rather than the heeled type, would be close to a 5mm. If a .22mag. case used an outside seated bullet like a .22LR, would be close to a 6mm. Doubt you'll see either one being produced as they wouldn't do anything better, except be different.

Historically, name a caliber, and there was probably a rimfire made in that size...from .58 on downward. 99.9% of them are long gone with no real chance of finding shooting quantities of ammo (and if you found it, the ancient rounds would likely refuse to fire as the old priming compounds are mostly dead by now).