Manurhin MR73 357 mag round count

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Well after 422 rentals our trusty sidearm has had its barrel crack. The forcing cone started to split at the 6 o'clock position. The current count on the gun is around 15,000 rounds. We will try and get a new barrel and get it back out to rent.
 
I am also surprised that it fails after 15K rounds. Aren't those Manhurin supposed to be able to withstand a steady diet of magnum loads for like forever ?
Gilbert
 
I'm curious, John. What was the rationale that convinced you?
I wanted to get one. I asked his opinion, can’t remember actually what was said, don’t dare put words into his mouth but I remember I changed my mind after the fact. Was a couple of years ago, I sprung for a P210-1 and a P9 Sport instead. I suppose if I could fondle and shoot one, may change my mind. Hopefully PP thaws the freeze.
 
I am also surprised that it fails after 15K rounds. Aren't those Manhurin supposed to be able to withstand a steady diet of magnum loads for like forever ?
Gilbert
Well, according to Chapuis Armes France, the Manurhin MR73 is tough as nails.

"... tests have shown that it can withstand 170,000 rounds of .357 Mag ammunition fired at full power without showing any signs of wear." According to Chapuis Arms France.

170,000 rounds ? Maybe. And then maybe not. A lot of money for a revolver that did not quite make it to 170,000 rounds. In fact, some 155,000 rounds short.

My guess is that a Ruger GP100 revolver could go to 170,000 rounds - and over. I DO NOT own a GP100 revolver. Never did. But I do know that Ruger GP100 revolvers are very strong - and very tough. Same for any Dan Wesson revolver in .357 Magnum caliber.
 
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^ I've read the same on the Manurhin. Wonder if it is a sample or batch problem. I've also read about GPs with cracked forcing cones so you never know.
 
I am also surprised that it fails after 15K rounds. Aren't those Manhurin supposed to be able to withstand a steady diet of magnum loads for like forever ?
Gilbert
It isn't difficult for me to imagine a rental gun being subjected to abusive handling by people who (either) don't know or don't care. If you handle a firearm carelessly, you will shorten it's life. So I'd say that this isn't really about the 15,000 rounds as much as it is the 422 rentals.
Well after 422 rentals our trusty sidearm has had its barrel crack. The forcing cone started to split at the 6 o'clock position. The current count on the gun is around 15,000 rounds. We will try and get a new barrel and get it back out to rent.

.
 
Just out of curiosity, how does mishandling crack the forcing cone? Also, I would imagine that the renter is required to use in-house supplied factory ammo, no?
 
Are you familiar with the concept of time? Are you familiar with the concept of timing? Have you ever tried to fit a square peg into a round hole? Have you ever tried to fit a square peg into a round hole at 1500 feet per second, and then done it again, and again, more than a thousand times?

 
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Just out of curiosity, how does mishandling crack the forcing cone? Also, I would imagine that the renter is required to use in-house supplied factory ammo, no?
Me too. Maybe I have been missing something along the line but I wonder how - exactly - mishandling a revolver could crack the forcing cone, assuming factory full power ammunition (.357 Magnum in this case).

I don't mind learning something I don't know. Well, in fact, I like it.
 
I don't understand Wendell, but to be fair, I'm not too familiar with the concept of time or square pegs and round holes, so I guess that's probably my issue. I thought most, if not all, cracked forcing cones are caused by erosion, but I guess it's all about time. Thanks for the information. I really appreciate it!
 
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