Bore Cleaners & Type 4 Trigger Housings - Oops

[WarPig1976]

Everybody knows JB bore paste. The abrasive in JB is Garnet.
When I worked at the Sunoco refinery we would cut huge holes in the sides of 1 million gallon gasoline/crude oil tanks for maintenance access. Couldn't use torches for obvious reasons. We used high pressure water @ 40 thousand psi. The water didn't do the cutting, the Garnet mixed in at the cutting face did.
Same abrasive, different application.

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[gsp45]

Bill you are completely correct on a clean bore is a must and I'd also be in agreement in the use of Aluminum Oxide and Kroil if I had a bore that had corrosive particulate trapped under some copper fouling. My point is, I wouldn't use this abrasive mix every time I cleaned my bore. In fact on a "new" barrel you will get the copper to fill in the microscopic fissures, which is "burnishing" a new barrel, but that's a whole other topic all together, and is off this topic.

[Bill Hollinger]

Dave, did you bore scope it to know for sure it is perfect? I only ask this because I learned a valuable lessen working in a barrel production shop. I've cleaned and scrubbed and cleaned some more with Hoppe's #9 and felt it could not get any cleaner only to be embarrassed when a bore scope was put to it. The owner of the company said Hoppe's was worthless for cleaning anything but soft fouling in a barrel bore. For 40 years I've used and relied on Hoppe's and would swear by it's abilities. Boy was I ever wrong! I will only use it on cleaning the actual parts of a gun now, not the bore.

To your question, any residue left behind from the combustion of the round going off can be detrimental to the life of the barrel. also, only use one piece coated rods like Dewey brand. Your DI was correct for sure about jointed military style cleaning rods. They will destroy a muzzle in short order. I would encourage all, please don't take my word for any of this. Clean your bore, clean it as you never have before and then have it bore scoped. You will be amazed at what you see.

BTW, we might just be producing M1 rifle barrels in the future. Look up Pac-Nor Barreling. Great company and great product!

[ed skeels]

Copper isn't the barrel/accuracy killer most think.
Carbon is Master of barrel death.
The longer it's left untouched, the harder it get's.
Ed