I posted about this revolver in this thread
S&W Model 1 - Latch Configuration/Cylinder Stop | The High Road
but this question isn't really related to repairs and is a bit more specific about the development of the '22 Rimfire' cartridge intended for the S&W Model 1. .
It was my intent to load some more black powder 22 shorts and fire the above revolver. I have read that many, including @Driftwood Johnson would not fire these old revolvers with anything but CB or BB Caps due to their age. And that might well be the 'Prudent' thing to do (and I may follow that rule) but that isn't the question. My question has more to do with the development of the first 22 rimfire cartridge developed for the first S&W Model No. 1. I had always assumed that the cartridge designed by S&W for the No. 1 was the same specification as the modern 22 short only using a full case of black powder. ie. a 29 grain bullet on top of 3 or 4 grains of black powder.
While researching the revolver I stumbled across this quote from the book 'Smith & Wesson 1857-1945' by Neal and Jinks:
http://www.antiquearmsinc.com/smith-and-wesson-model-1-first-issue-revolver-type-4-ivory-grips-volcanic-rollin-white-patent-pre-1898.htm
IMPORTANT: THE AMMUNITION DESIGNED FOR THIS REVOLVER DEVELOPED CONSIDERABLY LESS POWER THAN THE .22 RF SHORT (CARTRIDGE) AS WE KNOW IT TODAY. AS ORIGINALLY ISSUED THE CARTRIDGE WAS CALLED THE "NO. 1 PISTOL CARTRIDGE". MODERN AMMUNITION MAY NOT BE USED IN ANY OF THE THREE MODEL NO. 1'S AS THE PRESSURES DEVELOPED ARE MUCH TOO HIGH. page 22, Smith & Wesson 1857-1945 by Robert J. Neal and Roy G. Jinks. Copyright 1966 and 1975.
I also came across this video.
History of the Handguns of Smith & Wesson: ep01: The Model 1 - YouTube
(don't blame me for the presentation - at around 12 minutes it discusses the cartridge)
In that video the author indicates that the original cartridge designed for the No. 1 was a 15 grain round ball on top of 3 grains of black powder. I don't know if the video is based in fact but I can't find anything to contradict what was presented. The video references patent 11496 for an improvement and seems to be for a cleaning cartridge. US11496A - Improvement in cartridges - Google Patents
Even if you consider 3 grains of black power for both cartridges, there would be a difference in pressures between a 15 grain projectile and a 29 grain projectile. So it is relevant in the decision making process to fire these old revolvers.
The real question is if the S&W No. 1 was designed to fire a 15 grain projectile or a 29 grain projectile?
S&W Model 1 - Latch Configuration/Cylinder Stop | The High Road
but this question isn't really related to repairs and is a bit more specific about the development of the '22 Rimfire' cartridge intended for the S&W Model 1. .
It was my intent to load some more black powder 22 shorts and fire the above revolver. I have read that many, including @Driftwood Johnson would not fire these old revolvers with anything but CB or BB Caps due to their age. And that might well be the 'Prudent' thing to do (and I may follow that rule) but that isn't the question. My question has more to do with the development of the first 22 rimfire cartridge developed for the first S&W Model No. 1. I had always assumed that the cartridge designed by S&W for the No. 1 was the same specification as the modern 22 short only using a full case of black powder. ie. a 29 grain bullet on top of 3 or 4 grains of black powder.
While researching the revolver I stumbled across this quote from the book 'Smith & Wesson 1857-1945' by Neal and Jinks:
http://www.antiquearmsinc.com/smith-and-wesson-model-1-first-issue-revolver-type-4-ivory-grips-volcanic-rollin-white-patent-pre-1898.htm
IMPORTANT: THE AMMUNITION DESIGNED FOR THIS REVOLVER DEVELOPED CONSIDERABLY LESS POWER THAN THE .22 RF SHORT (CARTRIDGE) AS WE KNOW IT TODAY. AS ORIGINALLY ISSUED THE CARTRIDGE WAS CALLED THE "NO. 1 PISTOL CARTRIDGE". MODERN AMMUNITION MAY NOT BE USED IN ANY OF THE THREE MODEL NO. 1'S AS THE PRESSURES DEVELOPED ARE MUCH TOO HIGH. page 22, Smith & Wesson 1857-1945 by Robert J. Neal and Roy G. Jinks. Copyright 1966 and 1975.
I also came across this video.
History of the Handguns of Smith & Wesson: ep01: The Model 1 - YouTube
(don't blame me for the presentation - at around 12 minutes it discusses the cartridge)
In that video the author indicates that the original cartridge designed for the No. 1 was a 15 grain round ball on top of 3 grains of black powder. I don't know if the video is based in fact but I can't find anything to contradict what was presented. The video references patent 11496 for an improvement and seems to be for a cleaning cartridge. US11496A - Improvement in cartridges - Google Patents
Even if you consider 3 grains of black power for both cartridges, there would be a difference in pressures between a 15 grain projectile and a 29 grain projectile. So it is relevant in the decision making process to fire these old revolvers.
The real question is if the S&W No. 1 was designed to fire a 15 grain projectile or a 29 grain projectile?