Slug Some manufacturers also have recently introduced the more cylindro-conoidal-shaped "slug" pellets for the more powerful modern PCP air rifles. Compared to the commonly used diabolo pellets, these slug pellets resemble cast bullets and have more contact surface with the bore and hence need greater propelling force to overcome friction, but have better aerodynamics, ballistic coefficient, and longer effective ranges due to the more aerodynamic shape, however they also require a fully rifled barrel for spin stabilization in flight. Appropriately sized bullets cast from firearm bullet molds can be used in big bore air rifles. Caution should be used when handling lead projectiles or preparing animals for food, as lead fragments can be easily missed inside the meat. Lead-free slugs in airgun calibers are gradually being developed and becoming available for purchase from manufacturers such as Zan Projectiles, due in part to regulations on hunting with lead projectiles in many areas.
Slug Some manufacturers also have recently introduced the more cylindro-conoidal-shaped "slug" pellets for the more powerful modern PCP air rifles. Compared to the commonly used diabolo pellets, these slug pellets resemble cast bullets and have more contact surface with the bore and hence need greater propelling force to overcome friction, but have better aerodynamics, ballistic coefficient, and longer effective ranges due to the more aerodynamic shape, however they also require a fully rifled barrel for spin stabilization in flight. Appropriately sized bullets cast from firearm bullet molds can be used in big bore air rifles. Caution should be used when handling lead projectiles or preparing animals for food as lead fragments can be easily missed inside the meat. Lead-free slugs in airgun calibers are gradually being developed and becoming available for purchase from manufacturers such as Zan Projectiles, due in part to regulations on hunting with lead projectiles in many areas.