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Yes it will chamber, but the rifle will not function properly unless you use the long discontinued & unique "1903 Winchester .22 automatic cartridge". Aquila made a special run of this obsolete ammunition about ten years ago and you can still find it on gun stores shelfs for $12-$15 a box of 50. Google it.

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Q: Why your Winchester 1903 chambers 22 lr cartridge?
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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.


Which kind of 22 shells does a Winchester model 03 22 caliber rifle use?

The Model 1903 used a special "proprietary" cartridge called the "22 Winchester Auto". It became obselete in the late 1930s to early 1940s. I did recently here that a special run of the ammo was made, and being carried by a supplier somewhere in the eastern part of the U.S.


22 Magnum vs 22 WMR?

WMR stands for Winchester Magnum Rimfire- and is the proper name for the 22 Magnum. They are the same cartridge. The 22 WRF is the Winchester rimfire, and is a shorter, less powerful version of the 22 magnum.


Is a Winchester model 77 known as a 22 Hornet?

What do you call your gunA Winchester 77 if a semi auto .22 rimfire, the .22 hornet cartridge will not fit and cannot be made to fit into a model 77


Why your Winchester carabine mod 1903 born 1907 charges 22 LR cartridges it jams every 9 10 shots was it modified?

Your 1903 should only be used with the long discontinued "Winchester 1903 Automatic cartridge" to function properly. Aquila made a special run of this ammo about 10 years ago and can still be found on store shelfs. Sells for $12-$15 a box of 50 when you find it, or do a google search.


What does the wmr mean on a savage rifle?

As in .22 WMR? That is the full name of the cartridge- the .22 Winchester Magnum Rimfire- usually called the .22 magnum


Is ammunition for Winchester model 1903 22 automatic available?

Yes, Cheaper than Dirt has it.


Where can I purchase a stock for a Winchester 1903 22 automatic?

Jeff's Outfitters has both finished and unfinished rear stocks for the Winchester M1903. ~$60


What is the value of a Winchester serial number 66441 Mod 03 22 CAL Automatic in poor condition?

The Winchester model 1903,in 22 Win Auto rimfire cal.will bring between 250-325 dollars in the condition that you describe.If you are interested the serial number 66441 indicates that your Winchester model 1903 was made in the year 1911.


What year was your Winchester 22 wrf model 1890 serial number 182421 made?

good guess 1903


Where can you get tools to field strip 1903 Winchester 22 auto rifle?

You can find everything you need at Harbor Freight.


What is the value of a Winchester model 1903 semi automatic .22 caliber?

Depending on the condition, anywhere from $500-1000.