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post #1 of 7 (permalink) Old 03-25-2010, 10:58 AM Thread Starter
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Revolver Question

Probably a dumb question, i've never thought it out completely.

Why do i need 2 cylinders to shoot .22LR and .22Mag out of the same revolver, but i can shoot .38 Special in the same cylinder as .357 Magnum??

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post #2 of 7 (permalink) Old 03-25-2010, 02:05 PM
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Re: Revolver Question

Yea,the .22mag has a larger case diameter than the .22lr,so they are not interchangeable,whereas the .357 mag is just a longer .38,same case diameter.

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post #3 of 7 (permalink) Old 03-25-2010, 02:53 PM Thread Starter
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Re: Revolver Question

i thought that might be it, but when i last compared cases couldn't discern the difference.


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post #4 of 7 (permalink) Old 03-25-2010, 03:24 PM
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Re: Revolver Question

the case length difference between a .22 lr and a .22 mag is substancially longer than between a .38 special and a .357 mag.




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post #5 of 7 (permalink) Old 03-25-2010, 04:37 PM
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Re: Revolver Question

Put my micrometer on each to compare. .22mag case diameter is .235"--.22lr is .220".

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post #6 of 7 (permalink) Old 03-25-2010, 05:05 PM
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Re: Revolver Question

This is from Wikipedia:.22mag base diameter .241"---rim diameter .291". .22lr base diameter .225"---rim diameter .275".

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post #7 of 7 (permalink) Old 03-27-2010, 06:46 PM
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Re: Revolver Question

If you shoot 22LR in a 22WMR cylinder such as in a Ruger Single Six, you are likely to see many of the LR cases split due to the larger hole size for 22WMR. It may be a safety problem as well in addition to having a difficult time getting the spent LR cases out.
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