When it’s Real Dirty

by
posted on August 9, 2012
** When you buy products through the links on our site, we may earn a commission that supports NRA's mission to protect, preserve and defend the Second Amendment. **
wiley-clapp.jpg (1)

As much as we all enjoy guns and shooting, the clean up after a range session is never exactly pleasant. Even with modern solvents and tools, the residue left by shooting is difficult to remove. It’s even worse with lead bullets and a real pain when blackpowder is involved. A good bit of the gunk that is produced by the combustion of gunpowder can be at least softened and sometimes removed through the use of solvents. The old, traditional and still effective solvent is Hoppe’s No. 9, complete with that odd, banana oil smell. But when all the stuff that can be chemically removed is gone, you are stuck with the stuff that is mechanically imbedded in the barrel. This stuff has to be scraped from the bore. So what is the most efficient scraper? Long ago, old time gunsmith George Matthews introduced me to a product that is nearly miraculous. It is called Big 45 Frontier Metal Cleaner (or B45FMC for short).

The nastiest cleaning job I have ever faced came from one of those “10,000 rounds in one day” shoots of not so long ago. The gun was a brand new Sig P200 in .45 ACP and the ammo was Black Hills 230-grain ball. With a crew of a half dozen equally enthusiastic shooting buddies, we started early and ended with a barrel of brass, a great deal of interesting data and one very dirty gun. After an hour or so of conventional cleaning with bore brush, patches, tooth brushes and solvent, we had a generally clean gun, except for the ugly streaks of plated-on fouling down the bottom of every groove in the bore. It had been deposited on that good Sig bore by 10,000 fast shots, along with heat and pressure, and it wasn’t coming out.

Then I remember that I had some B45FMC on hand. Using this product, it took about 10 minutes to restore that bore to better than new condition. I can say that because I had a Ransom Rest 10-shot group fired at the beginning of the shoot and another after the cleanup. The latter had a visibly different size. This product looks like a hardware store pot scrubber with tight coils of thin metal. You use it by snipping off two or three strands about two inches long, then winding them into the bristles of a bore brush. Put this on a rod and go to town—everything comes out.

Latest

Icarry Diamondback Sdr Galco 1
Icarry Diamondback Sdr Galco 1

I Carry: Diamondback SDR in a Galco Hornet Holster

For our latest "I Carry" episode above, we paired the six-round Diamondback SDR DA/SA snubnose revolver with a simple leather holster from Galco, along with one of the latest EDC flashlights from Streamlight.

The Armed Citizen® May 8, 2026

Read today's "The Armed Citizen" entry for real stories of law-abiding citizens, past and present, who used their firearms to save lives.

Creating the Ideal First-Time Shooting Experience

That first time behind a trigger can shape a newcomer’s attitude towards firearms. Here are five ways to make the experience a success.

Henry Repeating Arms Founder & CEO Honored as Law Enforcement Supporter of the Year

Henry Repeating Arms founder and CEO Anthony Imperato has been named Law Enforcement Supporter of the Year by New York State Fraternal Order of Police Memorial Lodge 100.

New For 2026: TriStar Arms APOC Pro

The new APOC Pro takes the original TriStar Arms APOC pistol design introduced in 2025 and makes it optics- and suppressor-ready.

7 New Over-Under Shotguns for 2026

Ever since the development of the iconic Browning Superposed shotgun in the early 1930s, the concept of an over-under shotgun has remained popular not just with American shooters but shotgunners the world over.

Interests



Get the best of American Rifleman delivered to your inbox.