PROOF BBL CF Bolt 22LR 18" Zermatt 1-16 Sendero Rifle Barrel

The PROOF BBL CF Bolt 22LR 18" Zermatt 1-16 Sendero rifle barrel is a precision rimfire replacement barrel built for shooters who demand accuracy and durability in .22 Long Rifle. Whether you're building a custom 22 LR bolt-action rifle, upgrading an existing platform, or assembling a competition-grade rimfire, this barrel delivers the match-grade quality PROOF is known for in a practical 18-inch length that balances velocity with maneuverability. The 1-in-16 twist rate is optimized for standard and high-velocity .22 LR ammunition, stabilizing the wide range of bullet weights you're likely to shoot.

Chambered for the Zermatt action and threaded 1/2-28 at the muzzle, this barrel threads directly onto compatible Zermatt platforms without additional gunsmithing. The Sendero contour keeps weight down—just 2 pounds 11 ounces—so your rimfire build stays light enough for hunting, precision rifle competition, or extended range sessions without shoulder fatigue. Carbon fiber construction provides the strength and temperature stability serious rimfire shooters expect, resisting the harmonic shifts that throw off groups on steel or aluminum barrels.

PROOF barrels are manufactured to match-grade tolerances, meaning you're getting bore and chamber specs held to exacting standards. An 18-inch rimfire barrel is practical for most shooting disciplines—long enough to wring velocity from your ammunition, short enough to handle easily in the field or on the range. If you're chambering a Zermatt-based .22 LR build and want a barrel that won't compromise accuracy or require guesswork about fit and function, this is a straightforward, high-quality choice.

Key Features

• Carbon fiber construction for lightweight strength and thermal stability
• 1-in-16 twist rate optimized for standard and high-velocity .22 LR ammunition
• 1/2-28 muzzle thread compatible with common rimfire suppressors and muzzle devices
• Sendero contour balances accuracy and low weight (2 lbs 11 oz)
• Direct-fit threading for Zermatt actions—no custom gunsmithing required
• Match-grade bore and chamber tolerances

Specifications

Caliber	.22 Long Rifle (22 LR)
Action Compatibility	Zermatt
Barrel Length	18 inches
Twist Rate	1 in 16
Muzzle Thread	1/2-28
Contour	Sendero
Weight	2 lbs 11 oz
Construction	Carbon fiber

Frequently Asked Questions

Will this barrel fit my Zermatt action rifle?

Yes. This barrel is threaded specifically for Zermatt actions and requires no additional fitting or gunsmithing—it threads directly on. Confirm your action platform is a Zermatt before ordering.

What ammunition does the 1-in-16 twist stabilize?

The 1-in-16 twist is optimized for standard and high-velocity .22 LR ammunition. This rate works well across the typical range of .22 LR bullet weights you'll encounter in hunting and target loads.

What muzzle devices can I thread onto this barrel?

The barrel features a 1/2-28 muzzle thread, which is standard on most .22 LR suppressors, muzzle brakes, and thread-on accessories. Make sure any device you select is rated for 1/2-28 and rimfire use.

How does an 18-inch barrel perform compared to longer options?

An 18-inch barrel strikes a balance: it's long enough to extract good velocity from .22 LR ammunition and maintain accuracy, yet short enough to handle easily in the field or on the bench. It's a practical choice for hunting, competition, and general rimfire shooting.