(1) Does a Powerbelt bullet itself engage the rifling, or only the plastic skirt?
(2) How tightly does the plastic skirt stick to the bullet after firing? Is separation a problem? What about before firing?
(3) Can you order the bullets and skirts separately (in bulk) as a way to save money?
(4) Is there only one manufacturer, or do CVA and Knight make their own Powerbelts?
(5) Are Powerbelts technically considered to be sabots or conicals?
(1) During loading, only the base. After firing, base + bullet.
(2) They are attached by the peg in the base. Holding one in your hand tells the tale. They separate quickly.
(3) Not that I am aware of.
(4) The are all made by Big Bore Express.
(5) They are fundamentally bore-sized conicals.