This Proof Research barrel (brand part no. 101070) is a .243-caliber blank machined from stainless steel, cut to 28 inches with a 1:7.5 rifling twist built to stabilize heavier .243-caliber bullets at extended range. It’s sold under Proof Research’s M24 model designation, aimed at bolt-action builders replacing or upgrading a factory barrel; as an unchambered blank it arrives ready for a gunsmith to thread and chamber to the builder’s specifications. This rifle barrel is built for precision, long-range rifle applications.

Key Specifications

• Bore sized for .243 caliber, shipped as an unchambered blank for gunsmith fitting.
• Measures 28 inches in length.
• Machined from stainless steel.
• Rifled with a 1:7.5 twist, suited to heavier .243-caliber bullets.
• Sold under Proof Research’s M24 model designation.

Frequently Asked Questions

Why a 1:7.5 twist for .243? A faster 1:7.5 twist stabilizes longer, heavier-for-caliber .243 bullets better than a slower factory twist rate, which helps at extended range.

Is 28 inches unusually long for a .243? It’s on the longer end, which typically adds velocity and helps long-range shooters extend their effective range with this cartridge.

Buy the Proof Research .243 Caliber M24 Barrel, 28in, Stainless Steel

A stainless M24-profile barrel blank from Proof Research is a straightforward path to factory-grade long-range accuracy in .243 once chambered by your gunsmith. Order it from our Lubbock, TX gun shop for fast, insured shipping.