Gun Cleaning & ChemicalsBore TechSold by Brownells

Bore Tech

Proof Positive Nylon Bore Brushes - 7mm Nylon Bore Brush 3/Pack

Our editorial team reviews specifications, product data, and field-use information to keep pages accurate.

7mm Nylon

Bore brush, sold in a

Double-wound Construction

For increased scrubbing action

Twice As

Many bristles as competing brands

Oversized Bristles

For added strength

Non-brass Cores

Couplers help avoid copper fouling

$7.99
View on Brownells

You'll be taken to Brownells to complete your purchase.

Hunter's Outpost earns a commission from affiliate links at no extra cost to you.

SKU: 749101651

Overview

Designed for routine bore maintenance, this nylon brush is intended to help clean 7mm rifle bores with a more aggressive bristle layout than standard brushes. The double-wound construction and oversized bristles are presented as a way to increase scrubbing action while reducing the time needed for cleaning. Non-brass cores and couplers are included to avoid leaving copper-colored residue that could be mistaken for fouling in the bore. Sold in a 3-pack, it is a practical choice for hunters and shooters who want a dedicated cleaning tool for regular firearm upkeep.

Why Hunters Choose the Bore Tech

Double-wound Construction

Twice as many bristles as

Oversized Nylon

Bristles add strength for thorough

Non-brass Cores

Couplers help avoid false copper

Designed Shorten

Increased scrubbing action

7mm Caliber

Sizing fits compatible rifle bore

Key Features

  • 7mm nylon bore brush, sold in a 3-pack
  • Double-wound construction for increased scrubbing action
  • Twice as many bristles as competing brands
  • Oversized bristles for added strength
  • Non-brass cores and couplers help avoid copper fouling appearance

Best Used For

  • Routine bore cleaning for 7mm rifle owners who want a nylon brush in a three-pack.
  • Shooters using fast-acting copper cleaners and wanting a brush designed for that workflow.
  • Hunters maintaining rifles at home and preferring non-brass cores and couplers.
  • Users who want more scrubbing action from a double-wound brush during cleaning sessions.

Specifications

Bristle CountTwice as many bristles as competing brands
Caliber7mm
CompatibilityUse with fast acting copper cleaner
ConstructionDouble wound
Core MaterialNon-brass
Coupler MaterialNon-brass
MaterialNylon
Oversized BristlesYes
Pack Quantity3/Pack
Shortened Length For 17 And 20 Caliber Brushes1 inch shorter
TypeNylon bore brush

Pros

  • Double-wound construction provides twice as many bristles as competing brands.
  • Oversized nylon bristles add strength for thorough bore scrubbing.
  • Non-brass cores and couplers help avoid false copper fouling readings.
  • Designed to shorten cleaning time with increased scrubbing action.
  • 7mm caliber sizing fits compatible rifle bore cleaning needs.
  • Sold as a 3-pack for convenient bench or range use.

Considerations & Trade-offs

  • Nylon brushes are a cleaning accessory, so they are not intended to replace a dedicated copper remover when fouling needs more than mechanical scrubbing.
  • The non-brass core and coupler design is meant to avoid false copper indications, which is useful for bore inspection but may be less familiar than traditional brass-core brushes.
  • This is a 3-pack of 7mm brushes, so it is sized for a specific caliber and may not suit other rifles.
  • Nylon bristles emphasize scrubbing action, but the product description does not claim any abrasive or heavy-duty metal-removal capability.

Suggested Comparisons

  • Bore cleaning brushes
  • Nylon bore brushes
  • Rifle cleaning accessories

Suggested Accessories

  • Bore cleaning rod
  • Gun cleaning solvent
  • Patch holder
  • Cleaning jag

Frequently Asked Questions

What caliber is this brush made for?

This listing is for a 7mm nylon bore brush.

How many brushes come in the pack?

The product is sold in a 3-pack.

What makes these Proof-Positive brushes different from standard nylon brushes?

According to the product description, they are "double wound" and have twice as many bristles as competing brands, with oversized bristles for added strength.

Why does the description mention non-brass cores and couplers?

The description says the non-brass cores and couplers are used to prevent the appearance of copper fouling remaining in the bore.

Are there any special fit or length notes for this 7mm brush?

The source only notes that the .17 and .20 caliber rifle brushes are 1 inch shorter to reduce force and help prevent barrel damage. No similar special length note is provided here for the 7mm brush.