The Proof Research 157442 Bolt 243 18 7.5TW PXT barrel is a premium replacement bolt-action barrel designed to deliver consistent precision and dependable performance. Featuring Proof Research’s signature carbon-fiber wrapped profile over a stainless steel core, this barrel is engineered to reduce weight while maintaining rigidity and heat resistance for repeatable accuracy shot after shot.

This extra barrel is ideal for shooters looking to upgrade or refresh a favorite bolt-action rifle chambered in .243, especially for extended range sessions or demanding field use. The 18-inch length and fast twist rate are tailored for modern .243 bullet designs, supporting accurate performance for hunting, target shooting, and general range work. Backed by Proof Research’s reputation for innovation in lightweight, high-performance barrels, it offers a refined balance of durability and precision.

Key Features:

• Manufacturer: PROOF RESEARCH
• Model: PROOF 157442 BOLT 243 18 7.5TW PXT
• Product Type: Extra Barrel