Dual-Patented Rifle Barrel Technology
F.J. Feddersen dual-patented barrel rifle technology used a hybrid standard and polygonal approach. Our patented SEPR technology significantly reduces bullet deformation with less engraving upon firing. Fired bullets have a symmetrical trajectory through the barrel and exist in the straightest line possible. Our SEPR process also ensures the tightest seal of the projectile. This superb seal significantly reducing escaping gases and loss of gas pressures.
This benefit of this design when shooting match-grade ammo at sub Minute of Angle (MOA) accuracy. The SEPR rifling is also paired with Feddersen’s unique honing and boring process, which produces a straight and glass-smooth rifle bore.