Derraco Engineering Anvil base single screw type (Hornady type) tumbler BARREL LENGTH: 560mmRIFLING: 6 Groove

BARREL LENGTH: 560mmRIFLING: 6 Groove

in which three 12g Co2 capsules are pierced at the same time

Requires less energy to initiate expansion

Gases exit sideways to reduce felt recoil and improve rifle control

Derraco Engineering Anvil base single screw type (Hornady type) tumbler BARREL LENGTH: 560mmRIFLING: 6 GrooveMade of 303 stainless steel and brass. Our bushing holders will not work on the Hornady comparator set. Only compatible with the Derraco Engineering Headspace & Bullet Comparator set. Single screw type is convenient but may interfere with use and may not be as true. Dual grubscrews type will sit flush on caliper jaws, and offer secure gripping. Our Anvil bases will work with any brand of bullet comparators.