Process




	PRECISION STEP ONE – BARREL STRAIGHTENING The first step to a precision Bergara Barrel is to begin with a straight bar of cylindrical steel. We inspect and straighten every barrel manufactured to a deviation of less than 4/1,000 (or .004”) of an inch. Many barrel manufacturers never even evaluate this aspect of a barrel and consequently hinder the barrel’s accuracy potential.

	PRECISION STEP TWO – DEEP HOLE DRILLING Once the steel bar is straightened, the bar moves on to the deep hole drilling machine where a four spindle machine precisely drills the correct diameter hole.

	PRECISION STEP THREE – BARREL POLISHING While most other barrel manufacturers move directly from deep hole drilling to the rifling process, all Bergara Barrels pass through three separate honing spindles. The honing spindles utilize diamond-tipped bits that polish the barrel’s interior surface to a mirror-like finish with a groove diameter deviation of less than 9/1,000 (or .009MM) of a millimeter. It’s the same result that many gunsmiths accomplish by hand-lapping a barrel.

	PRECISION STEP FOUR – BUTTON RIFLING The final step to producing a Bergara Barrel is the button rifling process. A carbide rifling button is drawn through the barrel to produce the rifling grooves at the appropriate twist rate for each caliber. The result of this four-step process is a precision barrel so accurate that you’ll never go back to your original factory barrel.

Bergara Barrels