Proof Research 416 Bolt Action Steel Barrels

Proof Research make their steel barrels in-house with the exact same commitment to quality and repeatability as employ on their carbon fiber barrels. The drilling, rifling, and lapping process is identical to their composite barrels.  Proof Research start with the same steel as they use in the carbon fiber barrels.  It is a double stress-relieved 416R stainless steel, a pre-hardened chromium stainless steel that was specifically designed by engineers in collaboration with rifle barrel makers to provide the consistent, high quality and durability the firearms industry demands.

Proof Research Bolt Action Steel Barrels for 416 Caliber Features

Excellent machinability for gun drilling and reaming, plus exceptional polishability for uniform lapping

A homogeneous microstructure which responds to heat treatment providing a uniform hardness along the length of the barrel

Extreme Pressure Resistance

An optimum combination of high tensile strength along with requisite toughness to withstand extreme chamber pressures encountered during firing

Long-Lasting

Excellent erosion wear characteristics and corrosion resistance

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