Please confirm lead fouling

[meicalnissyen]

Hi all
I've shot plenty of 185swc in my blackhawk, but do not remember seeing this.

(Course I've reeducated myself since I've come back into the sport)

BFR, 500sw 10"
starline
win
30g 4759
Dardas 335

throats are 501, have not slugged the barrel yet110666

[osteodoc08]

Personally, I can't tell from the picture. Try to get an up close shot down the barrel with some back light.

[Tatume]

It looks like lead to me. Get some copper Chore Boy scrubbers, wrap strands of the material around a bore brush, and clean. I prefer to clean powder fouling first with Hoppes #9, the scrub the lead out of the still wet bore.

Do not use materials other than pure copper. Scrubber pads are available in copper plated steel, stainless steel, and other materials.

http://www.amazon.com/Chore-Boy%C2%AE-Copper-Scrubbers-Pack/dp/B000RO5JC8/ref=sr_1_2?ie=UTF8&qid=1405435600&sr=8-2&keywords=chore+boy

[44man]

Chances are the BFR will have .500" grooves. I also think throats would be .5015" with a good slug and mike. Your gun uses the same barrels as the JRH.
I shoot .501" boolits.
My bore looks the same and is something I don't worry about, it has never reduced accuracy. Might be the antimony wash spoken about. My bore is filthy, hardly ever clean it. Might be a year or better now. I never got enough lead out to worry about, maybe a few flecks on a patch.

[AggieEE]

Can't tell either, but, it does seem like you are running out of lube before the muzzel.

[prs]

A great way to look in there is to put the light at the other end of barrel and at an angle. That may be antimony residual instead of lead. Can't tell by pic.

prs

[44man]

I just cleaned my bore and I use a tight jag with Butch's triple twill patches. Tight fit, need to rap the patch in. I then used a .54 cal BP brush and I got about a dozen tiny flakes big as a pin point on the patches. I am at bare steel now. Had a LOT of carbon and lube.
Yeah darn it, you made me clean but there is still lube on the pin, etc so I left the cylinder alone. Look like black holes! :bigsmyl2:

[btroj]

I find that a single, dry patch down the bore helps see leading quite well. Look in the throat and along the edges of the lands. Leading is generally quite easy to see.

[44man]

How does 4759 work in the .500 S&W? I found it is super clean in the 45-70 BFR, don't even need to clean brass.

[meicalnissyen]

THANKS
for the response to my vague noob Q

I have a slightly better pic, and some very cool looking spiral pics no worth up loading

[meicalnissyen]

How does 4759 work in the .500 S&W? I found it is super clean in the 45-70 BFR, don't even need to clean brass.
seems to be the go to for the cartridge, though, I have mebbe 100 rounds thru it and have 335 lead, and 385 JHP on my bench

Time will tell
just scored a lb of w296 to play with and an option on 3 more if I like it, but for less than OMG, I think 4759 is great I fired 5 rounds with the 385JHP and 40 ( bit comped) 4759 and it lit well and hit the paper thats proly all you can get
gotta call it a great combo when you can go from 20 to 40 with no worries

[meicalnissyen]

I find that a single, dry patch down the bore helps see leading quite well. Look in the throat and along the edges of the lands. Leading is generally quite easy to see.

I bet it is, but, the first time I was listening to mitral regurg, I had someone say " come here, listen to this dudes chest, perfect example of MR........

[meicalnissyen]

Can't tell either, but, it does seem like you are running out of lube before the muzzel.

2 grooves of matts blue on the bullet, those 25 were with 30g instead of 25, the grey stuff may have been there on the session with 25gr, but I don;t remember seeing it

[meicalnissyen]

Chances are the BFR will have .500" grooves. I also think throats would be .5015" with a good slug and mike. Your gun uses the same barrels as the JRH.
I shoot .501" boolits.
My bore looks the same and is something I don't worry about, it has never reduced accuracy. Might be the antimony wash spoken about. My bore is filthy, hardly ever clean it. Might be a year or better now. I never got enough lead out to worry about, maybe a few flecks on a patch.

I called it 501, but I saw some spots on the slug at 502.
it was a ****ty slug job, I have some balls for my 54 poof gun somewhere that would serve well as measuring pigs

any one want to reccomend a bore ride DIA on Dans mold program? his default is 493, I kinda get 489 with a marginal caliper read, and MR says they show .4880 as a shop spec

[meicalnissyen]

It looks like lead to me. Get some copper Chore Boy scrubbers, wrap strands of the material around a bore brush, and clean. I prefer to clean powder fouling first with Hoppes #9, the scrub the lead out of the still wet bore.

Do not use materials other than pure copper. Scrubber pads are available in copper plated steel, stainless steel, and other materials.

http://www.amazon.com/Chore-Boy%C2%AE-Copper-Scrubbers-Pack/dp/B000RO5JC8/ref=sr_1_2?ie=UTF8&qid=1405435600&sr=8-2&keywords=chore+boy

your feelings on the H2O2/vinegar soak i have read about ?????

[meicalnissyen]

cropped110724

[btroj]

your feelings on the H2O2/vinegar soak i have read about ?????

Noooooooooooooooo

please, use a mechanical lead removal method like copper scrubbers or steel wool.

Why use something that isn't required and could pit the barrel?

[Tatume]

your feelings on the H2O2/vinegar soak i have read about ?????

Don't do it. The copper Chore Boy scrubber will remove lead quickly and easily, without risking damage to your barrel.

Take care, Tom

[meicalnissyen]

Don't do it. The copper Chore Boy scrubber will remove lead quickly and easily, without risking damage to your barrel.

Take care, Tom



Noooooooooooooooo

please, use a mechanical lead removal method like copper scrubbers or steel wool.

Why use something that isn't required and could pit the barrel?

another wifes tail busted, awwwww
I was racking my feeble recolection of chem to figure that link (weak acid and an oxidizer)
chelation would grab lead, but as you both point out,... a quick low risk scrub is best

[44man]

That bore just does not look bad to me. Keep shooting!

[jonk]

I can't tell if it is lead or antimony wash.

The real test would be to give the bore a quick scrub, then push through a tight fitting patch and examine. If you see bits of lead on the patch, you have leading. If not, it's just wash.

[btroj]

Antimony wash is a light grey smudge on the entire bore, easily seen at the muzzle. Think copper fouling but grey.

leading is hunks and ribbons of lead. It is easily felt when pushing a dry, snug patch thru the bore.