A buddy of mine killed over 80 coons 2 summers ago, and he used the 5mm Mag with the old Rem ammo and the 17HMR and he said the HMR worked as good as the 5mm. With the HMR he shot the 20gr. XTP and the V-max ammo. Don't let the small size of the HMR fool you because it is one deadly cartridge!Ive killed coyote, bobcat, fox, turkey with the HMR and it kills just as good as the 22 mag, and the 5mm magnum!And Ive shot alot of 5mms.