What is the difference between a normal 22LR and a 22 auto cartridge for Winchester rifle mod 1903?

.22 Winchester auto cartridge is very different than the common .22 L.R.. The .22 Win. Auto cartridge has a larger rim and case diameter & won't interchange. The Aquila cartridge company (Mexico) made a special run of this oddball ammo & it is available in the U.S. from specialty shops for around $12-$15 a box of 50. email me for cartridge measurements. I have an extra box of this ammo if interested.