Smithman1958
Active member
I have a S&W model 1 second issue and was wondering if modern 22 short ammo works with the revolver? Thanks in advance.
Does anyone know just how high the pressure is on those CB Shorts relative to the original loads? I've been hoping to try them in my Second Issue as well and wanted to know how risky they are, whether they're more in the category of something that the gun can technically handle, but you want to use it sparingly, or if they're actually comparable to the old black powder cartridges and you can shoot them relatively freely without worrying about the pressure killing your cylinder.
found this:
"After I started this thread, I decided to email CCI and ask them directly about the pressure of their CB rounds. I was hoping for a specific answer. I got a useful answer, but not at all specific. Linda Olin of their techical section in Lewiston Idaho gave this response:
"The CCI CB shorts do not actually run anywhere near the SAAMI maximum of 21,000 psi. None of our CCI short products 'exceed' that number on average pressure."
Here's the link:
Shooting 22 short CB in antique handguns - The Firing Line Forums
That said, I've shot BOXES of CCi CB caps through a very delicate .22 M Frame Ladysmiths with no ill effects.
YMMV, but I'm comfortable with using them.
If you're really worried, RWS still makes BB caps which are even lighter. (but very pricey)
glowe shoots his antiques, hopefully he'll chime in.
I do believe glow did a comparison 22 short black powder to 22 short CB and found the CB ones are lower power velocity wise. I have shot half a box of the CB one through my S&W number 1 2nd issue with no ill effects. A standard 22 short published velocity is around 1000 fps a 22 CB short is around 700 fps. There is no way I will believe the two produce the same chamber pressure.
I just answered the a question about CCI vs original BP ammo. Safely Firing an old Model 1
The data was taken from firing all ammo through a 3 1/2" barreled 22 Ladysmith, so similar speeds will probably be found in the Model 1. Maximum pressures can only be found for 22 LR @ something under 24,000 psi. The companies either do not test their other loadings of 22 Rimfire or do not publish the numbers. Pressure differences in this caliber and in short barreled revolvers can be compared to pressures in a general fashion, with lower velocities having lower chamber pressures. The numbers still prove to be elusive.
BTW, 22 Short ammo ran around 900 fps in the Ladysmith, and would definitely not be recommended for tip-up revolvers.
I have been looking for years to find proof that there were lots of failures with the Model 1 revolver from firing low pressure CB ammo. Glad you have it, so please post what information you have to share.
There is so much more than a moment's thrill in shooting these little gems. The fact that you are experiencing something that cannot be obtained by looking at one sitting in the safe from time to time is worth the risk to me. Knowing first-hand the capabilities of this model, how it operated, and marveling at the engineering that culminated in the design and production of a wonder for its time is part of the is half the fun.