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.
Our Process
