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Bore Tech

Proof Positive Pierce Style Jags - 338 Caliber Proof Positive Rifle Jag

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

.338 Caliber

Rifle cleaning

Heavy-duty Alloy

Construction

Special Coating

Helps protect against harsh chemicals

Precision Machined

To strict tolerances

True, Concentric

Pressure on barrel surfaces

$12.99
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SKU: 749101623

Overview

Built for routine rifle maintenance, this jag is designed to help shooters evaluate bore cleanliness without the copper-fouling false positives associated with traditional brass jags. Bore Tech’s proprietary heavy-duty alloy construction and protective coating are intended to stand up to harsh cleaning chemicals while remaining barrel safe. Precision machining and concentric pressure on the barrel surface support consistent patch contact during cleaning. It is a practical choice for hunters and rifle owners who want a more controlled, efficient bore-cleaning setup for .338 caliber rifles.

Why Hunters Choose the Bore Tech

Precision Machined

To strict tolerances for consistent,

Proprietary Heavy-duty

Alloy construction offers strong tensile

Special Coating

Helps protect the jag against

Designed Avoid

Brass-related false positives when checking

100% Barrel

Safe according to the product

Key Features

  • Designed for .338 caliber rifle cleaning
  • Heavy-duty alloy construction
  • Special coating helps protect against harsh chemicals
  • Precision machined to strict tolerances
  • Provides true, concentric pressure on barrel surfaces
  • Made to avoid brass-related false positives when checking for copper fouling

Best Used For

  • Hunters who want a more reliable bore-cleaning check without brass-related false positives
  • Rifle owners focused on precise patch pressure during routine barrel maintenance
  • Users looking to reduce wasted patches and cleaning chemicals during bore cleaning
  • Serious shooters maintaining a .338 caliber rifle with Bore Tech cleaning tools

Specifications

Barrel Safe100% barrel safe
Caliber.338 Caliber
Chemical ProtectionProtects against harsh chemicals
CoatingSpecial coating
Concentric PressureTrue, concentric pressure
Jag StylePierce Style
Precision MachinedYes
Product TypeRifle Jag
TolerancesStrict tolerances

Pros

  • Precision machined to strict tolerances for consistent, concentric pressure on barrel surfaces.
  • Proprietary heavy-duty alloy construction offers strong tensile strength.
  • Special coating helps protect the jag against harsh cleaning chemicals.
  • Designed to avoid brass-related false positives when checking for copper fouling.
  • 100% barrel safe according to the product description.
  • Can help reduce wasted patches and chemicals during bore cleaning.

Considerations & Trade-offs

  • Designed specifically for .338 caliber rifles, so it is not a universal jag for other bore sizes.
  • The product is intended to avoid the copper-fouling false positive associated with traditional brass jags, which means it is a specialized cleaning tool rather than a general-purpose patch accessory.
  • Its coated alloy construction is meant to stand up to harsh cleaning chemicals, but that also makes it a more specialized option than a basic brass jag.
  • Using a Proof Positive jag may reduce wasted patches and chemicals, but actual savings will depend on your cleaning routine and how often you clean.

Suggested Comparisons

  • Bore cleaning patches
  • Rifle bore brushes
  • Other caliber-specific cleaning jags
  • Gun cleaning solvents and chemicals

Suggested Accessories

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

Frequently Asked Questions

What is this jag designed to do for a .338 caliber rifle?

It is a Proof Positive Pierce Style Jag made for .338 caliber rifle cleaning. The product is intended to help you clean the bore and avoid the "false positive" issue associated with traditional brass jags when checking for copper fouling.

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

The source says it uses a proprietary heavy-duty alloy instead of brass. It also has a special coating that seals the jag to protect it against harsh chemicals and is described as 100% barrel safe.

Does this jag come with any size or fit details beyond .338 caliber?

No additional size or fit details are provided in the source beyond the .338 caliber designation.

What cleaning benefit does the product claim to provide?

The source says eliminating brass can help give a cleaner rifle bore and may save time and money by reducing wasted patches and chemicals.

Is this product meant for use with Bore Tech cleaning products?

The description says to get the best cleaning results by using Proof-Positive Jags with Bore Tech products, but it does not specify a particular cleaner or accessory.