What is a 470 Capstick?
The .470 Capstick is a rifle cartridge created by Col. Arthur B Alphin from A-Square in 1990, named after writer and hunter Peter Hathaway Capstick. It is based on a .375 H&H Magnum case blown out and necked to accept a .475 inch bullet. With 500 grain bullets, it can achieve 2400 feet per second muzzle velocity from a 26″ barrel.
What is a Capstick cartridge?
The .470 Capstick is an unusual cartridge although the design is based on a simple idea; i.e. neck up the .375 Holland & Holland to take .475″ bullets, which is the largest bullet diameter that the .375H&H case can handle.
What is the difference between A Capstick and an Ackley?
The big difference between the .470 Capstick and the .470 Ackley is that the .470 Capstick case has a “ shadow shoulder ” at the case neck to provide an additional feature to aid centering the cartridge in the chamber.
What are the dimensions of the Capstick case?
The case has a length of 2.800 inches (71.1 mm), and the overall cartridge length is 3.65 inches (93 mm). A cartridge drawing is shown below for dimensions. The .470 Capstick will fit in the same length action as the .375 H&H Magnum and .458 Lott.