Gold Cup accuracy problem

G

goat

New member
I have a colt gold cup that had not been fired for 8 months.I took it out to shoot and
found that the accuracy to be horrible.Groups
were all over the place.Took it home and cleaned the barrel and found large carbon deposits on the lands of the rifling.Used shooters choice,outers nitro,outers foul out
and nothing would remove it.Final measure was
to take 22 brush and scrub.Removed some but not all.Shot it accuracy was worse.Carbon is at the muzzle end by the way.HELP!Bad barrel?
I only use jacketed bullets.
 
Hi, Goat,

Sure it is carbon? I have no idea what could cause that amount of carbon at the muzzle. Could it be a bulge in the barrel?

Jim
 
Difficult to diagnose without actually seeing. What color are the patches when they come out? Greenish,black,gray? By the way,be careful mixing those solvents;wrong combo can etch a barrel in NO TIME.I would stick with Shooters Choice or Hoppes Bench Rest but don't mix these two either.The Outers is a good choice for severe fouling providing you flush the barrel with water & then coat lightly with oil after use. Barrels wear the most just immediatly ahead of the case mouth,but they foul the most from halfway down toward the muzzle. In heavily fouled barrels,a four hour solvent soak followed by a diligent scrubbing is in order.Unless you have severe rust pitting which is "collecting" the fouling,probably your barrel is O.K.,just needs ALOT of attention. Keep us posted.
 
Try some Shooter's Choice Extra Strength Copper Remover. This is 5% ammonia, and will remove the copper or gilding metal well.

If this doesn't work, get some lead away cloth, which has a very fine abrasive impregnated in it, cut it into small patches, put it over two regular .45 patches, soak the whole thing with Shooter's Choice solvent (or whichever nitro powder solvent you use), then scrub the bore vigorously.

Should clean your bbl. Walt
 
Thank you for the replies.I use pmc and umc ammuntion.Could I have damaged the barrel with so much scrubbing.I used a stiff 22 brush at the muzzle so I could concentrate on the problem areas.A gunsmith I know told me to use a dentist tool very carefully. (scary)Is this bad advice?Is using the 22 brush a bad idea?Is too much srubbing bad in general? questions questions questions
 
Dental tools are frequently advertised for gun cleaning. But, to me, they're just too hard and too sharp for guns, with too much potential for causing damage. I wouldn't use them.

You might consider sending the pistol to Colt's and letting them diagnose and repair the problem. Opinions differ, but my experience with Colt's service department over the last year or so has been very good.



[This message has been edited by jimmy (edited February 16, 2000).]
 
FWIW, best stay away from dental tools. They get away very easily.

Is there any chance of getting hold of an Outers Foul Out kit? Probably not worth it to buy one, but it sounds like the ticket here.

Jim
 
Someone at guntalk posted this:
50% vinegar, 50% hydrogen peroxide.
Plug breech & pour it in.
Leave for 5 mins & flush out with water.
Supposedly gets it VERY clean ! :)

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