New to shooting lead, what is this?

[Stopsign32v]

I figure you guys will know immediately. This is 45 Colt and these bullets http://missouribullet.com/details.ph...5&secondary=14

So what is causing it and how do I clean it? It's hard as sin

[S.B.]

I wish I could find some pure lead ingots locally for black powder and older guns.
Steve

[tazman]

That is lead being gas cut off the base of the boolit, escaping through the cylinder gap and plating itself to your revolver.
Depending on how many rounds it took to build up to that level, you may need to clean more often.
Usually soaking the area with gun cleaner or Kroil for a while will loosen the stuff up so it can be removed with a brush or a small flat bladed screwdriver.

[Stopsign32v]

That is lead being gas cut off the base of the boolit, escaping through the cylinder gap and plating itself to your revolver.
Depending on how many rounds it took to build up to that level, you may need to clean more often.
Usually soaking the area with gun cleaner or Kroil for a while will loosen the stuff up so it can be removed with a brush or a small flat bladed screwdriver.

It was 100% clean before going to the range and that was after about 40 rounds. Can it be avoided or minimized?

[SNDBGGR1484]

Hi,

It's a buildup of lead on your forcing cone. A "Lewis Lead Remover" works the best for me to remove the lead buildup.Some people like to use a smashed shell casing to clean the frame area around the barrel.Be careful using sharp pointed objects to clean on the frame cause it's so easy to slip and scratch the frame.

[44Blam]

What is the load under them?
Maybe the load is a little too much for a PB boolit?

[Stopsign32v]

What is the load under them?
Maybe the load is a little too much for a PB boolit?

8gr of Unique. What is "PB"?

[redhawk0]

What is "PB"?

Plain Base....as opposed to GC gas checked.

redhawk

[Guesser]

PB - plain base. as in no gas check on the bullet.
I shoot a lot of cast from several different 45 Colt revolvers and have never had that in 40 rounds. I cast my own and load over 8.5 gr. of Unique. What BHN are your bullets?

[WebMonkey]

plain base.
no gas check

[Stopsign32v]

PB - plain base. as in no gas check on the bullet.
I shoot a lot of cast from several different 45 Colt revolvers and have never had that in 40 rounds. I cast my own and load over 8.5 gr. of Unique. What BHN are your bullets?

Gotta help me out with all of these terms. BHN?

[Hickory]

Looks like undersized boolits causing blowby at the throat.

[tazman]

BHN refers to the hardness of the lead. Brinell scale I believe.

[Stopsign32v]

BHN refers to the hardness of the lead. Brinell scale I believe.

Oh, shows 12 on their site...?

[tazman]

That is a kind of mid range hardness used in pistol rounds and low velocity rifle loads. It is easily achieved with lots of different alloys and works well in the majority of handguns.
You will find that sizing to fit your particular gun will have a larger effect on how well you gun shoots and the accuracy of your loads than the hardness of the boolits in the vast majority of cases.
Sizing to fit revolvers is a bit different than sizing for a semiauto pistol.
I would suggest reading the sticky at the top of the handgun forum about revolver accuracy. It covers things that will help with this as well as other things.
http://castboolits.gunloads.com/show...olver-accuracy

[Wayne Smith]

Have you a micrometer? Soft lead? Oh, you are buying your boolits - so go get a soft lead teardrop sinker and slug your barrel. I'm guessing that your boolits are a little small for your barrel. Measure the inside of your barrel with the slug and compare it to the diameter of the boolit you are using. You should be a couple thousands over your groove size. If the boolits aren't that big - that's your problem.

[Stopsign32v]

Have you a micrometer? Soft lead? Oh, you are buying your boolits - so go get a soft lead teardrop sinker and slug your barrel. I'm guessing that your boolits are a little small for your barrel. Measure the inside of your barrel with the slug and compare it to the diameter of the boolit you are using. You should be a couple thousands over your groove size. If the boolits aren't that big - that's your problem.

I do have a micrometer

[JonB_in_Glencoe]

Gotta help me out with all of these terms. BHN?

http://castboolits.gunloads.com/show...-on-This-Forum

[KenT7021]

Try some of the Brinell 18 bullets from the Missouri website.

[JonB_in_Glencoe]

That is pretty excessive lead buildup for 40 rds, have you checked the cylinder gap?