Powder fowling

[jsthntn247]

I was cleaning my gun the other day and went through my normal regimen of about 3-4 patches soked with kg-1 on a jag and tight fitting patch. The first 2 patches usually come out solid black then by the 4th they are pretty clean. I then hit it with the nylon brush a few strokes then one more patch with solvent to make sure it's not black, then dry patch out. It was late but I decided to let the last solven patch set in the bore for an hour or so while I finished watching the ball game, which I don't normally do. Well, I fell asleep and the KG-1 set in there for about 8 hours. The next moring I dry patched the barrel and this is what the patches came out looking like. I've never seen the linear streaks of carbon on patches like this before. Did I get some fouling out by letting is soak that I normally would miss?

 

[bill123]

Do you have a muzzle brake? The patch spirals through the barrel because of the rifling but when it hits the brake, there is no rifling and the fouling marks are linear.

 

[jsthntn247]

No brake on the gun

 

[bill123]

No brake on the gun

Is the rod turning with the rifling?

 

[jsthntn247]

Is the rod turning with the rifling?

Yes, it's a carbon rod that turns

 

[bill123]

Yes, it's a carbon rod that turns

I get marks like that as well. In fact I just finished cleaning and my last patch looks just like your far right patch.

I wondered for a while how the marks were made and concluded that they could only be made when the rod is not spinning, either at the action end or the muzzle end. Since I have a brake, I concluded that they were made when the patch no longer contacts the rifling and it was passing over the end of the brake.

Since you don't have a brake, could it be that the barrel is completely clean and you are picking up fouling in the action (before the rod starts turning).

 

[Mateo]

Could it be residue that was hard to get at in the corners of the rifling? And the extra soaking of the solvents loosened it up so it came out? That would leave linear marks because the patch would follow the twist. Just a theory as I've never had this happen.

 

[jsthntn247]

Could it be residue that was hard to get at in the corners of the rifling? And the extra soaking of the solvents loosened it up so it came out? That would leave linear marks because the patch would follow the twist. Just a theory as I've never had this happen.

That is exactly what I was thinking also. I will do this after the next match and see if I get the same marks.