.470 Capstick

.470 Capstick
TypeRifle
Place of originUnited States
Production history
DesignerLTC. Arthur B. Alphin
Designed1990
ManufacturerA-Square
Specifications
Parent case.375 H&H Magnum
Case typeBelted, straight
Bullet diameter.475 in (12.1 mm)
Neck diameter.499 in (12.7 mm)
Base diameter.513 in (13.0 mm)
Rim diameter.532 in (13.5 mm)
Case length2.85 in (72 mm)
Overall length3.65 in (93 mm)
Rifling twist10
Primer typeLarge rifle
Ballistic performance
Bullet mass/type Velocity Energy
500 gr (32 g) Solid 2,400 ft/s (730 m/s) 6,394 ft⋅lbf (8,669 J)
500 gr (32 g) Woodleigh Soft 2,376 ft/s (724 m/s) 6,266 ft⋅lbf (8,496 J)
500 gr (32 g) GS Custom Flat Nose Solid 2,342 ft/s (714 m/s) 6,088 ft⋅lbf (8,254 J)
500 gr (32 g) Cast Lead 1,130 ft/s (340 m/s) 1,417 ft⋅lbf (1,921 J)
400 gr (26 g) Speer Flat 2,484 ft/s (757 m/s) 5,479 ft⋅lbf (7,429 J)
Test barrel length: 26 in
Source(s): Cartridges of the World

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 (12 mm) bullet. With 500 grain (32 g) bullets, it can achieve 2400 feet per second (730 m/s) muzzle velocity from a 26" barrel.

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