Want to improve the performance of your pellets? The Beeman Pell Seat allows the shooter to create a perfect air seal between the pellet and the barrel, allowing maximum velocity and accuracy. The rounded end of the Beeman Pell Seat smoothes pellet skirt irregularities, making a perfect fit to the bore. This eliminates air blow-by and produces better pellet uniformity, resulting in greater power and accuracy. The pointed end of the pell seat safely seats the pellets into the rifling. Generally, top velocity depends on finding a pellet's optimum tightness of fit in the bore. Fits all pellets from .177 to .25 caliber