.270 Caliber Brass Bore Brush

In stock

SKU: BR-0001-270

Product

.270 Caliber Brass Bore Brush

In stock

SKU: BR-0001-270

$1.50

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.270

$1.50

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The .270 Winchester has been a go-to hunting cartridge in North America for nearly a century - and every round through the barrel leaves copper jacket fouling behind. This .270 caliber brass bore brush clears it out. Phosphor bronze bristles are aggressive enough to break up copper and carbon deposits but won't damage your bore the way a steel brush could.

Deer, elk, antelope - the .270 handles them all with a combination of flat trajectory and manageable recoil that few cartridges can match. Hunters who rely on it season after season know that bore cleaning between outings isn't optional. Copper fouling builds gradually, and by the time you notice accuracy dropping off, there's already a significant layer lining the barrel.

Stay ahead of it. Run this rifle cleaning brush with copper solvent after each hunt or range day - a few passes is enough. Consistent gun cleaning is the simplest way to keep your .270 grouping where it should.

Caliber:

.270 Win, .270 WSM

Product Type:

Bore Brush

Firearm Type:

Rifle

Use Case:

Bore Fouling Removal

Pack Size:

10-Pack, 20-Pack, 3-Pack, 5-Pack, Single

Bristle Material:

Phosphor Bronze

Core/Stem Material:

Twisted Wire (Brass)

Bore Diameter (in):

0.277

Thread Size:

8-32

Country of Origin:

Imported (China)

Brand:

GUNNIX

What size bore brush do I need for a .270 Winchester?

Use a .270 caliber / 7mm bore brush with 8-32 threading. The .270 Winchester has a bore diameter of 0.277 inches. This brush also fits other .270-bore cartridges like the .270 WSM and 6.8mm SPC. If you see a brush labeled ".270/7mm," it covers both - the diameters are close enough that manufacturers size them together.

Does a .270 bore brush also fit 7mm cartridges?

Most manufacturers sell .270 and 7mm (.284") brushes as the same product. The bore diameters differ by only 0.007 inches (0.277" vs. 0.284"), and brush bristles flex enough to clean both effectively. If you own a .270 Win and a 7mm Rem Mag, one brush handles both barrels.

Should I push my .270 bore brush in one direction only, or back and forth?

Yes. A phosphor bronze brush will not damage the bore in either direction. Some precision shooters prefer single-direction strokes - breech to muzzle - to avoid pushing debris back into the chamber. For general hunting rifle maintenance, back-and-forth works fine. Keep the brush wet with solvent, and let it exit the muzzle fully before reversing to avoid bending bristles at the crown.

Should I use a bronze or nylon bore brush for my .270?

Bronze handles the copper jacket fouling that .270 Winchester produces at its typical 3,000+ fps velocities. High velocity means more copper transfer from the bullet jacket to the bore. Bronze bristles scrub that fouling loose where nylon bristles slide over it. If you use a copper-specific solvent, run a nylon brush during the soak phase to avoid false readings.

Do I need a separate bore brush and jag for my .270?

Yes - they serve different functions. The bore brush scrubs fouling loose from the bore walls. The jag holds a tight-fitting patch that wipes the bore clean and applies solvent evenly. Using both in sequence gives you the fastest, most thorough cleaning. Run the brush with solvent first, then follow with a jag and patches until the patches come out clean.

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