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  #1  
Old 12-04-2016, 6:18 PM
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Default Forcing cone wear, normal? S&W 629

Is this amount of wear normal for 70 rounds in?

A mix of 44 spl cowboy and 44 mag 240 sjfp (fiocchi and ppu)



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  #2  
Old 12-04-2016, 6:22 PM
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I have a model 19 and that model suffers from increased forcing cone wear and cracking of too short of OAL loads are used (eg 38special/light 357s. It is recommended I use 158 grain or higher bullets in my 19.
I would expect that the rationale would be the same for a 44mag/44spc if you are running the shorter 44spc loads.
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  #3  
Old 12-04-2016, 6:28 PM
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I don't think that is wear, it looks like lead buildup.
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  #4  
Old 12-04-2016, 6:42 PM
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looks like lead to me too
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  #5  
Old 12-04-2016, 7:00 PM
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I'll third the lead diagnoses.
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  #6  
Old 12-04-2016, 7:07 PM
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There would be no forcing cone wear on the outer diameter of the barrel forcing cone.

This is lead residue pushed outward from the high pressure gasses that escape between cylinder and barrel gap.

Should be easily removed by a dental pick or something similar.

It may have been there before shooting it and be left over machine tooling edge.

Last edited by ontmark; 12-04-2016 at 7:10 PM..
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Old 12-04-2016, 7:09 PM
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Lead, carbon, and heat discoloration. Looks normal to me. Don't spend too much time cleaning the area. It'll only look like that again the next time you shoot it.
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  #8  
Old 12-04-2016, 7:46 PM
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Upon further examination, with a dental pick, the mushrooming edge appears to be scraping off.
Will also consider shooting more rem mag over spc. Thanks guys.
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  #9  
Old 12-05-2016, 7:04 AM
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I agree with other members diagnosis. I saw forcing cone erosions on high mileage Smith 686 and Ruger GP 100s, that is not how they look. The edges are " more rounded " for lack of a better description, and you clearly see circumferential hairline cracks coinciding with the forcing cone area itself.
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Old 12-05-2016, 8:43 AM
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Try a brass brush and a cleaner of your choice. I've been using the mpro ,cleaner with good results.
Here's what force cone erosion usually looks like. This was from my Redhawk before I sent it in. The insides start chipping away.

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  #11  
Old 12-05-2016, 9:27 AM
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Quote:
Originally Posted by Catch View Post
Upon further examination, with a dental pick, the mushrooming edge appears to be scraping off.
Will also consider shooting more rem mag over spc. Thanks guys.
I just reloaded 500 rounds of .44 Special, 240 LSWC over 6.0 grains of Unique. My 1983 S&W Model 29 has a great trigger and I like to shoot it. Eventually you get tired of shooting Magnums and in CA that grizzly bear attack I have expecting for the last 33 years never happen.

Shoot the Specials and enjoy that revolver.
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  #12  
Old 12-05-2016, 11:09 AM
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Regardless of the forcing cone wear, measure the gap b/n the cone and the cylinder. Check that as well.
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  #13  
Old 12-05-2016, 11:38 AM
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Quote:
Originally Posted by Che762x39 View Post
I just reloaded 500 rounds of .44 Special, 240 LSWC over 6.0 grains of Unique. My 1983 S&W Model 29 has a great trigger and I like to shoot it. Eventually you get tired of shooting Magnums and in CA that grizzly bear attack I have expecting for the last 33 years never happen.

Shoot the Specials and enjoy that revolver.
lol that's so true that's why I like my M21 .44special
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  #14  
Old 12-05-2016, 12:06 PM
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I agree. The 629 that I have has seen more 44 Special loads than full house 44 Mag. It is such a fun gun and caliber to shoot.
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  #15  
Old 12-06-2016, 8:53 AM
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Quote:
Originally Posted by Sauermonkey View Post
lol that's so true that's why I like my M21 .44special
That M21 is on my "wish list". Beautiful well done handgun.
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