FX Superior Heavy STX Barrel Liner .30 700mm Pellet/Slug brand_-Blackrock 44m to infinity for a

44m to infinity for a clean sight picture at typical field ranges

since it sits quietly with most colours without the starker contrast of black or white

when you are picking apart a hillside for deer or waiting for a beast to settle before committing to a stalk

The polymer tip also protects the bullet in the magazine and improves the ballistic coefficient

FX Superior Heavy STX Barrel Liner .30 700mm Pellet/Slug brand_-Blackrock 44m to infinity for aThe FX Superior Heavy Smooth Twist X (STX) barrel liner is a replacement rifled liner for FX PCP air rifles, manufactured using FX's patented process of pressing the rifling into the barrel from the outside. This 700mm liner is chambered in . 30 calibre and carries a 1: 22" twist rate, making it well matched to heavier . 30 calibre pellets and heavier slugs. The "Heavy" designation does not refer to a thicker barrel wall per FX, it denotes a different