+P ammo in 625-6 .45 Colt mountain Gun

dakasat

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I just picked up and found a 625-6 4" in .45 Colt. I'm wondering if it is safe to shoot the Georgia Arms 260 grain JHP +P. This ammo is rated at 1200 fps. Any opinions would be appreciated...
dakasat
 
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Same frame as the 629 44 Magnum, so I'd say it will handle 45 +P loads with no problem.
 
Same frame as the 629, but different heat treatment. The 625 .45 Colt Mountain Gun is an excellent revolver. I have one and it is one of my favorites, but it is not a magnum. Will it safely fire the +p loads? Most probably, but it will end up battered into early retirement. JT is right, get a Ruger for the really hot stuff.
 
John Linebaugh's articles on loading heavy .45 Colt's will have the information you desire. The S&W will not take "Ruger Only" loads but can be loaded to give excellent results for deer. John's wife uses an S&W for hunting deer and antelope.

John carries a Smith .45 Colt on a daily basis. Scroll down to the bottom of the article for his comments on the Smith. I tend toward the conservative side of the coin and John's suggestions to hold the load's at 5% below the listed loads sounds good to me.

Linebaugh's Custom Sixguns - Heavyweight Bullets

FWIW
Dale53
 
Mine get a steady diet of 335gr @ 1150. They are much more than led to believe. Ticks me off when people complain of Smiths' being soft or weak. Be reasonable and they will take more than the average guy will put them through. Give up the keys to the Subaru, vote for the working man, and shoot some plus P's in your Smith. It feels good to be a man..........Good shooting.......Sprefix
 
I have a 25-5 in 45lc and I am sure those loads would be ok. however, I am a 3 screw ruger that I would shoot them in and save my smith for the cream puff 900 fps loads
 
What do you intend to shoot that 260gr at 1200fps will kill, but the same bullet at, say, 1000fps won't kill?
 
Most ammunition manufacturers will tell you if their product is safe in a S&W, so I would certainly check with them.

From personal experience with Mountain Guns and +P ammo, I can tell you that your hand will probably give out before the pistol does. ;)
 
I didnt know S&W revolvers are not as stronge as Rugers untill I came to this forum.I read S&W have forged frames,Rugers have cast frames. I know Rugers have a lot more meat on them but why are Smiths loooked down on when in come to shooting hot and heavy loads? I have being shooting light loads out of my 29-3 8 3/8'' because its tight as a drum and I want to keep it that way. How about some light on the subject ? Its not like Im going to shoot 200 rd of full power Magnum Loads thru it everyday, Dont think I could,LOL!
 
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For what it's worth, I've talked to the folks at Buffalo Bore, Double Tap, etc., and they recommend standard pressure 45LC in Smith&Wesson's, and +P for Rugers and other hulking revolvers.
 
It's not the strength of the metal as much as the weaknesses in a century-old design.

In limited use it's probably fine. Don't be surprised if it's needs service sooner rather than later.
 
Saturday I shot my 625-7 Mountain gun with my 250gr. r.n.f.p.
loaded at 900 or so f.p.s. I think it was 9 grs. of Unique.
It was a snappier load than the 'cowboy'loads I shoot and with wood
grips I wouldn't want to shoot anything hotter unless hunting.

Start with cowboy loads and work up from there.
The fun in shooting a 45 Colt revolver is the big 'thump' then
that big slug flying downrange.

You can hot rod Smiths in 45 ,but why make it into a 44 Magnum
unless you're hunting or defending yourself with it?

Regards ,,Allen
 
It's not the strength of the metal as much as the weaknesses in a century-old design.

In limited use it's probably fine. Don't be surprised if it's needs service sooner rather than later.

Exactly. Can an N-Frame 45 safely shoot reasonably hot loads? Of course. Will a steady diet of hot loads loosen it up faster than shooting standard loads? Of course. And that is true no matter what caliber N-Frame we're talking about.

But all else being equal, 45 LC loads that are not any hotter than moderate 44 Mag loads are not going to be any more detrimental to an N-Frame than those same 44 Mag loads would be, IMO.
 
John Linebaugh's articles on loading heavy .45 Colt's will have the information you desire. The S&W will not take "Ruger Only" loads but can be loaded to give excellent results for deer. John's wife uses an S&W for hunting deer and antelope.

...John's suggestions to hold the load's at 5% below the listed loads sounds good to me.

Linebaugh's Custom Sixguns - Heavyweight Bullets

FWIW
Dale53

+1 for the recommendation to read this article! Very informative and the power is not the issue it is the pressure and Linebaugh dispenses some solid knowledge on the matter.
 
+1 for the recommendation to read this article! Very informative and the power is not the issue it is the pressure and Linebaugh dispenses some solid knowledge on the matter.

A quote from that article:

In reality the Model 25-5 is about 80% as strong as the Model 29 in the cylinder area. The frames are the same and are designed for a 40,000 psi load level even though we know this is a bit more than they are happy with. It's too bad S&W built a 40,000 psi cylinder and installed it in a 30,000 psi frame, so to speak.

Clearly, there is a typo in the last sentence which should read "It's too bad S&W built a 30,000 psi cylinder and installed it in a 40,000 psi frame, so to speak." So the "weak link" in an N-Frame 45 is the cylinder, not the frame.
 
But all else being equal, 45 LC loads that are not any hotter than moderate 44 Mag loads are not going to be any more detrimental to an N-Frame than those same 44 Mag loads would be, IMO.
This makes sense. I can't believe that S&W has separate heat treating for N-Frames and their cylinders, depending on what caliber they are. It seems like such a system would be terribly error-prone and require much more effort than just doing them all the same at the same time. If anyone has any reliable information to the contrary, please speak up.

I would not hesitate to occaisionally shoot .45 Colt +P through a MODERN S&W. If I frequently required that power level, I would get a Ruger or better still just get a Model 29 and be done with it.
 
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This makes sense. I can't believe that S&W has separate heat treating for N-Frames and their cylinders, depending on what caliber they are.

I'm sure they don't. But the chamber walls of a 45 cylinder are considerably thinner than those on a 44 cylinder, hence they can't handle as high a pressure as the 44 cylinder. Put another way, the cylinder on an N-Frame 357 can no doubt safely handle 60,000+ psi but an N-Frame 44 with that same pressure would be a time bomb and an N-Frame 45 would surely kaboom after a few rounds at that pressure.
 
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