White marks inside cylinder and around forcing cone

[lefty620]

i recently purchased a used ruger secturity six blued, which i thought was in impeccable shape. However upon cleaning i noticed some whit material around forcing cone and inside the cylinder chamber it was kind of thick and some of it came off with a good scrubbing but there's still these marks. Could someone explain to me what it is (i dont think its rust) and how to remove it

 

[Super Sneaky Steve]

Those pictures are so small I can't see anything.

 

[lefty620]

sorry its from my phone i dont have any other means of uploading them. the 2nd picture shows it the best

 

[Roughedge]

Cant see the pictures good but its most likely lead, give it a good scrubbing and keep shooting.

 

[lefty620]

i think thats what it is, just looked up pictures of heavy lead fouling. Thanks for the help.

 

[JohnKSa]

I can't really tell from the pictures, but the most likely explanation is lead fouling. Lead turns white when it oxidizes.

 

[hoghunting]

When I looked at your pictures, my first thought was lead fouling also. As the others have stated, a good cleaning will take care of it.

 

[DnPRK]

Lead fouling can turn white when it oxidizes.

 

[UncleEd]

Lead fouling PLUS residue from dried lubrication on the bullets.