Muzzle trashed...

fleaflop

fleaflop

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Hey gang,... have you ever seen this type of corrosion and what could have caused it... I have never seen this type of thing from a firearm that has not been buried since WWII.
This is a new purchase of a used Shield 380 PC that looked to be in good shape except for the carbon.... The carbon was so thick, I suspected it had not been cleaned since new... and that was the reason I did not see the damage. wow.
 

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Someone did a number on the crown and the end of the rifling, Strange that it's only at the end and no corrosion on the outside of the barrel? Closest to that I have seen is a barrel on a 1911 that someone tried to alter the rifling profile, a relative who is a LEO here in Florida showed me one they had gotten from a car. I didn't see the actual barrel, just pictures.

Sent from my SM-T227U using Tapatalk
 
That barrel is trashed, but I swear I don't know what would cause the corrosion that is inside the barrel and not elsewhere. My first thought is that it had been dipped in salt water, but no corrosion on the outside would seem to negate that idea. From your picture, I can only conclude that a previous owner tried to clean the bore with an acid or overly aggressive solvent and no oil.
 
Looks to me poorly made or faulty MIM barrel got by QC.
The porosity and erosion at the muzzle tells me they ran short of MIM goop to fill the mold on that one.:rolleyes:

Cheers
Bill
 
.455_Hunter said:
I don't think MIM is used for barrels.
Click to expand...

A brief search on this forum will yield copious discussion on MIM barrels, even linked video clip wherein a still of a J-frame MIM barrel is displayed.

Image search via google one finds images of bodyguard 380 barrels with the telltale parting line where the halves of the mold meet.

Cheers
Bill
 
Lots of good ideas there, but why not on the crown? or outside of the barrel.... those two spots look new, or at least age appropriate. The rest of the rifling looks fine also... Corporate says this is what the model is called: M&P 380Shield Ported PC EZ. Made Aug.2020. Say that five times fast!.... I also sent the images to S&W, I think they may be stunned, confused like everyone here,... cause have not seen a reply.

   
 
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As ugly as it is, it may deliver quite acceptable accuracy. After all, it's not a dedicated bullseye pistol.

I don't see anything that would make it unsafe to shoot.

If it was my pistol, I'd shoot it. Would you?
 
Porting, was the way it was manufactured... I bought it because it was an online auction, coated in carbon (inside barrel, and frame) but could not see that anyway with images of the gun. The images looked like a brand new pistol, but was not expecting that. I had the same thought as Auton... buried in mud since 1942, but only the inside tip of the barrel,...except it was built in Aug. of 2020. In fact, i seriously doubt if the seller even knew about the damage.... the carbon on the barrel has been piling up for some time... it took several cleanings to remove it. Hard to say, but I would guess the round count to be less than 1000, judging by the wear everywhere else.
 
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