Ruger utilizes a in between bore size others us the 22lr, or 22 mag bore. The bore size really isn't the issue the chamber case dimensions are...
LR Ammo in a WMR Cylinder
- Thread starter Whit
- Start date
Gotcha. Was just wondering how mfr's approached the
slug differences, in terms of bore.
The M in 22WRM stands for Magnum, so 22WRM=22Magnum, right?
22WRF is not 22 magnum, correct?
If the cylinder is rated for 22WRM (rather than WRF) then pressure shouldn't be an issue since 22LR and 22WRM are both rated for 24,000
Now if you're shooting 22LR in a gun chambered for 22WRF there is a little more risk since that cartridge is only rated for 19,000 psi.
The brass expanding and possibly sticking is a potential issue since both the body and rim of the 22WRM is .016" larger than 22LR (.242/.294 for the WRM case/rim vs. .226/.278 for the 22LR case/rim). That might also be enough expansion to result in a case/rim rupture/blowout. But it seems to me that in a revolver even if it happened the chance of injury is extremely small - as long as you are holding the gun normally at arm's length. Maybe a little more risk for other shooters to the side of you though.
22WRF is not 22 magnum, correct?
If the cylinder is rated for 22WRM (rather than WRF) then pressure shouldn't be an issue since 22LR and 22WRM are both rated for 24,000
Now if you're shooting 22LR in a gun chambered for 22WRF there is a little more risk since that cartridge is only rated for 19,000 psi.
The brass expanding and possibly sticking is a potential issue since both the body and rim of the 22WRM is .016" larger than 22LR (.242/.294 for the WRM case/rim vs. .226/.278 for the 22LR case/rim). That might also be enough expansion to result in a case/rim rupture/blowout. But it seems to me that in a revolver even if it happened the chance of injury is extremely small - as long as you are holding the gun normally at arm's length. Maybe a little more risk for other shooters to the side of you though.
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There was a time that Ruger owners reamed one chamber in their 3 screw single sixes to .22WRF. It was carried with this chamber empty under the hammer or when used as a 1 shot .22WRM the chamber ahead of it was left empty........
Well, sorta. The 44 mag case is .023" larger than the 41 mag - so the excess "slop" is about 1-1/2 times more (.023" vs .016") AND the pressure is much higher too - 36,000 psi for the 41/44 magnum versus 24,000 psi for the 22LR/22magnum.
So 1-1/2 times the size difference and 1-1/2 times the pressure.
There's also a .019"diameter difference between the 41mag and 44mag bullets versus only a .001" difference between the 22LR and 22mag bullets.
So, I'd be a lot more hesitant to sub the 41mag for the 44mag vs the 22LR for the 22mag.
But that's just my 2 cents.
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AJ
US Veteran
I can't fathom not realizing the difference between a .41 and a .44 case.
gregintenn
Member
I once bought a Heritage revolver from a guy. It only had a magnum cylinder. He said it was ok because he usually shot 22 lr in it. I bought a long rifle cylinder for it.
I also bought a 32 Iver Johnson top break revolver from another fellow. He reached in hos pocket and handed me a handful of 32 acp ammo to go with it.
Many things are possible, and some people do these things. This does not make them good ideas.
I also bought a 32 Iver Johnson top break revolver from another fellow. He reached in hos pocket and handed me a handful of 32 acp ammo to go with it.
Many things are possible, and some people do these things. This does not make them good ideas.
AJ
US Veteran
You had better teach your friend to pay attention or to leave firearms alone before he hurts himself.
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