Cylinder marks on 57-6

[Caballero2]

Hello,
I just purchased a brand new S&W 57-6 41mag. I took it to the range and fired several rounds of Remington factory ammo 210gr soft point. I also ran some of my reloads through it 215gr lead powder coated SWC over 15 grains of Accurate #9.
When I got home I noticed marks on the cylinder that I had not seen before. I thought it was just powder but it will not come off. The marks are like burn marks in the finish.
Is this normal? Can they be removed?
Below are several pics of the cylinder and the inside of the top strap.
Any help with this would be greatly appreciated.
Thanks,
Joe

 

[glenwolde]

Need the pics....don't see them....

 

[Caballero2]

Should be up now

 

[smithra_66]

Quite normal. I wouldn't worry about them.

 

[colt_saa]

This is very common

That is a reflection of the gasses from that screw that is not sitting flush with the top strap

If you want to clean it off, use the same process that you use for the carbon rings on the front of the cylinder

 

[dave1918a2]

I think I would have a gunsmith cut the forcing cone a bit larger.

 

[chief38]

They are lead and carbon marks. Use a 100% cotton Flannel cloth and Hoppes 9 or some gun oil - should come off.

 

[Beauetienne]

They are lead and carbon marks. Use a 100% cotton Flannel cloth and Hoppes 9 or some gun oil - should come off.

Yep. Or Aerokroil.

 

[jc2721]

Yep. Or Aerokroil.

Aerokroil is good stuff!

 

[markeb]

The problem is the front sight screw is not flush with the top strap. It's an issue with newer revolvers. Clean gently.

colt_saa, sorry, didn't read your post.

 

[chief38]

Aerokroil IS very good but I am not thrilled with the odor - but yes, it will work as well.

 

[Caballero2]

Thanks to everyone, with your responses and explanations. I went slow with flannel and hoppes #9.And I got it clean, I will try to find some of the Aerokroil.

 

[stansdds]

Thanks to everyone, with your responses and explanations. I went slow with flannel and hoppes #9.And I got it clean, I will try to find some of the Aerokroil.

Yep, just powder, lead, and bullet lube residue, glad you got it cleaned off. By the way, you failed to mention how that new Model 57-6 shoots.

 

[theprincipal]

I have a model 19 classic with the same marks, but with small divots into the barrel finish….. I sent it back to the mothership for a look see.

 

[Caballero2]

Yep, just powder, lead, and bullet lube residue, glad you got it cleaned off. By the way, you failed to mention how that new Model 57-6 shoots.

It shoots great. I shot a .411, 215 grain RNFP powder coated cast bullet with 8 grains of Unique. Just right and accurate.

 

[stansdds]

It shoots great. I shot a .411, 215 grain RNFP powder coated cast bullet with 8 grains of Unique. Just right and accurate.

Awesome!