Prometheus Pellets 4.5mm 21Gr - Silver
Extremely accurate, heavy boat-tail pellet that provides outstanding downrange energy. Designed primarily for PCP rifles and not effective in spring or gas powered rifles. Piledrivers are offered in 4.50mm and 4.46mm body diameter, as .177 barrels from different manufacturers need different body diameters. For optimum results the pellets should be inserted into the bore with a pellet seater to centralise the pellet.