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Proof Research sets its sights on New Zealand - NZ Outdoor Hunting
At the factory in Columbia Falls, Montana, Proof’s carbon fiber composite barrels start out identically to their precision steel barrels as fully stressrelieved 416R stainless steel bar stock. These bars are then precision drilled, cut rifled and then hand lapped to produce the straightest and most consistent barrel blanks possible. From there, barrels destined to become composite barrels are turned down to a minimum profile before being built back up with aerospace grade carbon fiber. Proof’s unique carbon winding process allows them to engineer the carbon composite for each barrel and avoid problems that have plagued other composite barrels such as point of impact shift due to changes in the barrel’s temperature and delamination of the carbon from the steel. Read more...