.45 Colt Chamber Pressure for Model 25

[unspellable]

Both the S&W 25 and Blackhawk cylinders in 45 Colt will blow out at about 60,000. The S&W is more susceptible to developing end shake, not because the frame stretches, but because the yoke tail cuts a groove in the bottom of the cylinder well. The Blackhawk locates the cylinder by the neck bearing on the frame with a much larger surface area. That said, the S&W and a number of other modern 45s will take a heavier load than the old SAA. The problem is there is no published data for such that I am aware of.

 

[jreidthompson1]

Accurate powder manual edition 3.5 lists ~20k psi load data.

There's also lots of data listed as Tier 2 45 colt loads in many reloading magazines. Search colt 45 tier 2 load data

 

[Lt.Donn]

I would not loat a S&W model 25 to 36,000psi. But I fail to believe that your going to wear or stretch a frame any worse than a 44 mag does loading them in the 23,000m to 25,000 psi range which should not approach the 44 mags 5788 lb

The truth is the heavier bullet and/or the higher the pressure OF ANY round the harder on the gun AND the shooter. But your going to spend multiple time the money on ammo and or reloading components that the gun is worth before you wear one out with loads under 23,000psi, 357, 41 mag 44 mag, or any of the 45s

Truth...in our collective hundreds of years of shooting...I have yet to see any platform worn out from shooting...shot a little lose, yrs, a fractured part or 2 , yep, but shot to the point of being flat wore out...not me...but I'm certain some maybe pro shooters have

 

[rockquarry]

Truth...in our collective hundreds of years of shooting...I have yet to see any platform worn out from shooting...shot a little lose, yrs, a fractured part or 2 , yep, but shot to the point of being flat wore out...not me...but I'm certain some maybe pro shooters have

I don't know what a platform is in relation to guns, but many moderneers like that term. As for .45 Colt data, what's wrong with using reliable and suggested data from reputable paper load manuals? Am I missing something important? I loaded for this cartridge for about forty years in a variety of revolvers and long guns using cast bullets. I finally lost interest in the cartridge and the guns.

 

[Lt.Donn]

I don't know what a platform is in relation to guns, but many moderneers like that term. As for .45 Colt data, what's wrong with using reliable and suggested data from reputable paper load manuals? Am I missing something important? I loaded for this cartridge for about forty years in a variety of revolvers and long guns using cast bullets. I finally lost interest in the cartridge and the guns.

And you didn't wear the gun out

 

[rockquarry]

And you didn't wear the gun out

No, and I shot them a lot. I have a couple of Model 29s (the newest one I've had for forty years or more) if I get the urge to load powerful. Why beat up a 25-5?

 

[RebCop]

Thing is a Ruger cylinder is the same diameter as one from an N frame Smith. The Ruger cylinder stop notch is however SLIGHTLY offset from dead center on the chambers

This argument about S&W 45 colt loads goes on and on despite the fact plenty of us fire higher than the 14,000psi loads set to keep 45 colt ammo safe for antiquated guns, which the model 25 ISN'T. The idea that one in 45 ACP is safe at 23,000psi and one in 45 colt isn't defies any kind of logic or principle. I keep thinking of machining out a heavy but simple test frame that I can mount a 45 colt cylinder and barrel in and fire remotely and proceed to blow up the cylinder up. Start at 20gr of 2400 and go up .5 gr at a time. I bet it takes loads over the max 44 mag range to do it. I don't believe in "magnuming" 45 colts, but the 14,000psi limit for model 25s is ridiculous and personally believe a S&W 45 colt cylinder your not all that close to going over the yield strength at 25,000psi. Yield being the point at which a metal deforms, where tensile is beyond that and the point where it fails

I believe sir you win the internet.

 

[steelslaver]

No, and I shot them a lot. I have a couple of Model 29s (the newest one I've had for forty years or more) if I get the urge to load powerful. Why beat up a 25-5?

my point IS 23,000psi loads will not beat up a model 25 and certainly no more than a 36,000 psi load will beat up a model 29. I have 3 45 colts I built from 1917 frames, one of them a Brazilian, all have also been machined for adjustable sights, and both of them have been subject to lots of loads in the 23,000psi range, yet neither is loose or "beat up"

 

[rockquarry]

my point IS 23,000psi loads will not beat up a model 25 and certainly no more than a 36,000 psi load will beat up a model 29. I have 3 45 colts I built from 1917 frames, one of them a Brazilian, all have also been machined for adjustable sights, and both of them have been subject to lots of loads in the 23,000psi range, yet neither is loose or "beat up"