Blew up my compensator!

Me too!

Hi,

I just purchased a brand new $1,500 US ($2,000 Canadian) S&W 627 V-Comp here in Toronto, Canada. As I took the gun to the range for the first time , within my first 8 shots I felt a noticeably stronger recoil and my group on the target was awful. As I proceeded to unload the spent cases I noticed that the tip of my compensator was missing. It's been torn off just like yours. I was using factory ammo - Remington UMC - 125 grain .357 mag. I don't reload and never use anything but factory ammo. I had to send the revolver to the warranty repair shop all the way across Canada, to BC. Although their customer service was superb, and I had an opportunity to speak to the actual gunsmith who repaired the gun (by replacing the blown-off compensator) - he did not have an answer as to why did such occurrence take place. He speculated that the comp was not tightened up properly in the factory, however I do not subscribe to this theory. Maybe the hotter loads do have a separation issue and a fragment did hit the comp upon exiting the muzzle of the barrel. Although the firearm was returned to me with a brand new compesator installed and no damage to the barrel, I lost confidence in using it with the comp due to the comment by the gunsmith that repaired it himself, and that is that I should be checking if the part (comp) is on tight after every series I shoot, which I find to be ridiculous. I simply took the compensator off altogether. The gun might not look as pretty, but at least I am not risking getting a piece of hot metal blown off and potentially hurting either someone standing close to me or myself. Too bad.
 

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I own several Smiths with the V-comp and actively shot them. Eventually all the slits in the comp filled with lead. I removed it and soaked it in old Hoppes #9 which softened the lead so I could get it out. I then called S&W and asked for a plain nose cap which I would pay for. I was told they had no such thing so I hung up. Called again until I got a knowledgeable rep who sent me a FREE nose cap which I use exclusively.

The first Model 500 Magnum I bought had the slotted comp and was worthless. A member here wanted my gun badly so I sold it to him and bought a newer 500 with a real comp(which actually works).

I too recommend locktite on the comp screw.

PS Did you prescribe some Xanax when you got home after the blow-off?
 
Your comp appears to have rotated clockwise. This would have accounted for the hit on the left side.
Is it possible for the comp to rotate?
 
OTHER THAN ON THE ULTRA LARGE CALIBER HANDGUNS, I FIND THAT THE COMPS HAVE NEGLIGIBLE VALUE, AS FAR AS CONTROLLING RECOIL OR MUZZLE RISE. IF YOU LOVE THE "SPACE GUN" LOOK THEN HAVE AT IT. PERSONALLY, IF I DID END UP WITH ONE OF THESE REVOLVERS, I WOULD REMOVE AND KEEP THE COMP, AS AN ORIGINAL PART TO THE GUN, AND REPLACE IT WITH A PLAIN END CAP......
 
The same thing just happened to me. The comp was clean. The locking washer was in place and the bolt was tight.

I was shooting factory remington .357 125 grain JSP.

I'm a little concerned about any damage to the barrel.
 

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I think that even though there is a lock washer, I will put some loctite on there in the future.

There was no loctite on the bolt when it arrived from Smith & Wesson. I assumed they didn't put any on the bolt because of the lock washer.

I'm really bummed.
 
Loctite might not perform well, due to the extream heat at the muzzle. Heat, is what used, to soften Loctite, when removing screws, and parts, that have been treated with Loctite.

This is why Mag-na-port, might be a better option. No parts, nothing to come lose, fall off, etc.
 
Loctite might not perform well, due to the extream heat at the muzzle. Heat, is what used, to soften Loctite, when removing screws, and parts, that have been treated with Loctite.

This is why Mag-na-port, might be a better option. No parts, nothing to come lose, fall off, etc.

Good point.

I only fired 8 rounds before I noticed - during a reload. It was on tight and the lock washer was in place. I'm pretty bewildered.
 
You're right, the comp was slightly ajar. Could it be that the screw loosened from the factory strength loads I was shooting and the comp wasn't perfectly centered? I still can't believe a bullet could break apart st the muzzle.

These were the Dardas hard cast bullets. I've fired thousands of them in different calibers.

I guess things just happen.

Always use blue Loctite on the compensator bushing. I had mine come loose on my 929
 
I think I found out why the bolt loosened after only 8 shots.

The lock washer doesn't have a lot of "lock" to it. Its pretty much flat.
 

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We had a customer who had this happen. Of course it came loose while firing. He sent to Smith FOUR times before it was right. No idea, but I think the engineering on that sucks.
 
We had a customer who had this happen. Of course it came loose while firing. He sent to Smith FOUR times before it was right. No idea, but I think the engineering on that sucks.

Agreed. The engineering leaves a little to be desired.

I think a good lock washer would have prevented this.
 
This just happened to me

This just happened to me on my Brand New, first owner 627 VComp. Less than 150 rounds through it.

Factory Ammo - 357 Mag - Speer

Screw was tightened, possibly just gas pressure?
Im going to call SW in the morning and see if they can send a replacement. The metal appears very "brittle" pieces fall apart on my finger.

Its also possible that the compensator doesn't sit centered as there is a little play when loosening the bolt. I'm going to have the gunsmith I ordered it from take a look at it tomorrow
 

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Don't tell S&W that you are shooting handloads as that will void any warranty!
 
I would agree that it appears to be a poor design. But folks, it pays to remember a truth here -- with any mechanical device held together with screws it pays to check the tightness of those screws on a regular basis. It is the nature of screws to loosen with vibration over time. Some screws will stay tight forever; others will walk in a heartbeat, and you'll never know which is which unless you are paying attention. That's just the nature of the beast.
 
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