Bore deposits

[yamoon]

I have an Austrian Alexander Henry with very hard bore fouling, it has been impervious to every cleaning solution I have tried. Did some of the powders used in Austria before WW2 contain metal? Any suggestions appreciated. I don’t believe the fouling is lead.
Thanks Mike

[offhand35]

I wonder if repeated soaking with Kroil would help.

[algmule]

Hello

Mike,
you have a pm from me.

Kind regards
Peter

[yamoon]

Peter
would you resend the PM.
Thanks Mike

[yamoon]

Here are bore scope photos of the deposits.

[algmule]

Hello

Mike,
I have tried again. Apparently I've sent it as a Visitor Message and not a PM. This forum is easily more annoying than me, any day of the week. Hope it arrives this time. Corrected some spelling mistakes as well.

Kind regards
Peter

[sharps4590]

Those look more like pits from corrosive priming than deposits to me

[yamoon]

I would agree, except these areas are raised not pits. Could it be corrosion lifting the barrel metal? I hope not, but I don’t know.
Mike

[mike ford]

It looks like corrosion to me also. If soaking with penetrating oil and a good scrubbing with a bronze bristle brush and steel wool doesn't remove it, it might take abrasives ( fire lapping) to do it.
Mike

[yamoon]

I have kroil ordered. Will let it set in the bore a day or so then scrub, if that doesn’t work, I will ask for information on fire lapping.
Mike

[sharps4590]

I don't have a bore scope so am basically ignorant of how they look and especially when a picture is taken so I'll shut up and see what you learn. However, it does look like pitting in the picture, no?

[yamoon]

I won’t shoot this rifle much, but I would like to clean up the bore. I just got the bore scope a few days ago. I checked the bore on my Meister schuetzen and was pleasantly surprised at how clean it was. I checked the bore on my Mauser B sporter that I have experienced copper fouling and found pitting. I still plan on using it to hunt with. I am going to the range in Kansas City Friday, taking 2 schuetzen rifles and plan on spending the day enjoying myself. My offhand needs a lot of work.
Mike