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Bore Tech

Proof Positive Pierce Style Jags - 20 Caliber Proof Positive Rifle Jag

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

20 Caliber

Proof Positive rifle jag for

Heavy-duty Alloy

Construction replaces traditional brass jags

Special Coating

Helps protect against harsh chemicals

Precision Machined

To strict tolerances for concentric

Designed Be

100% barrel safe

$11.99
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SKU: 749101628

Overview

Designed for routine bore maintenance, this 20 caliber jag is intended to help shooters get a more reliable read on barrel cleanliness during patching. Bore Tech describes it as a heavy-duty alloy design with a protective coating that resists harsh chemicals and is safe for the barrel, while its precision-machined construction is meant to apply consistent pressure on the bore surface. It is a practical choice for hunters and rifle owners who want to reduce wasted patches and cleaning chemicals without adding unnecessary complexity to the process. The trade-off is straightforward: it is a specialized cleaning accessory, not a general-purpose tool, and it is meant to be used as part of a proper cleaning system.

Why Hunters Choose the Bore Tech

Precision Machined

To strict tolerances for consistent,

Heavy-duty Alloy

Construction offers strong tensile properties

Special Coating

Helps protect the jag against

Designed Be

Barrel safe

Eliminates Brass

To avoid false positives when

Key Features

  • 20 caliber Proof Positive rifle jag for bore cleaning
  • Heavy-duty alloy construction replaces traditional brass jags
  • Special coating helps protect against harsh chemicals
  • Precision machined to strict tolerances for concentric pressure
  • Designed to be 100% barrel safe
  • Intended to reduce wasted patches and chemicals

Best Used For

  • For hunters verifying a clean .20 caliber rifle bore before storage or the next range session.
  • For shooters who want to avoid false positives when checking for copper fouling.
  • For users seeking a precision-machined jag for consistent patch pressure during cleaning.
  • For rifle owners looking to reduce wasted patches and cleaning chemicals.
  • For those maintaining .20 caliber rifles with Bore Tech cleaning accessories.

Specifications

Barrel Safe100% barrel safe
Caliber20 Caliber
Chemical Protectionprotects it against harsh chemicals
Coatingspecial coating
False Positive For Copper FoulingNo
Materialproprietary heavy-duty alloy
Precision MachinedYes
Pressure On Barrel Surfacestrue, concentric pressure
Product TypeRifle Jag
Tolerancesstrict tolerances

Pros

  • Precision machined to strict tolerances for consistent, concentric pressure on barrel surfaces.
  • Heavy-duty alloy construction offers strong tensile properties.
  • Special coating helps protect the jag against harsh cleaning chemicals.
  • Designed to be barrel safe.
  • Eliminates brass to avoid false positives when checking for copper fouling.
  • Compatible with 20 caliber rifle cleaning applications.

Considerations & Trade-offs

  • Designed specifically for 20 caliber rifles, so it is not a universal jag for other bore sizes.
  • The product is positioned as a replacement for traditional brass jags, which means it is intended for users who want to avoid brass-related false positives during copper fouling checks.
  • Its coating is described as protective against harsh chemicals, but that also means it is a purpose-built cleaning accessory rather than a multi-use tool.
  • Performance depends on pairing it with the correct patches and cleaning setup; the product is optimized for precision cleaning rather than broad compatibility.

Suggested Comparisons

  • Bore cleaning jags
  • Rifle bore cleaning accessories
  • Gun cleaning patches
  • Bore cleaning tools

Suggested Accessories

  • Bore cleaning patches
  • Gun cleaning solvent
  • Cleaning rod
  • Bore guide

Frequently Asked Questions

What is the Proof Positive Pierce Style Jag used for?

It is a .20 caliber rifle jag designed for bore cleaning. The product is intended to help you clean the barrel and check for copper fouling without the false positive issue associated with traditional brass jags.

Why does Bore Tech say this jag is different from a brass jag?

According to the product description, it uses a proprietary heavy-duty alloy instead of brass. Bore Tech says this avoids the false positive that brass jags can create when testing for copper fouling.

Is this jag safe to use in the barrel?

The description states that it is "100% barrel safe." It also says the jag has a special coating to help protect it against harsh chemicals.

What caliber is this jag made for?

This product is listed as a 20 caliber Proof Positive Rifle Jag.

Does the product description specify any dimensions or materials beyond the alloy and coating?

No. The provided data does not list blade length, overall length, weight, handle material, or sheath material, and it does not provide additional construction details beyond the proprietary heavy-duty alloy and special coating.