.500 A-Square

The .500 A-Square is a belted, bottleneck rifle cartridge, developed by Arthur Alphin in 1976. The cartridge is based on the .460 Weatherby Magnum necked up to accept the .510 in (13.0 mm) bullet; the same as the .50 BMG cartridge. This was Col. Alphin's first commercial sporting cartridge and was designed in "response to some severe problems experienced with the .458 Winchester on safari in Mozambique."

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1978  Wikidata
rifle cartridge, A-Square, 
.14-222, .17 Ackley Bee, .17 Hornet, .17 Mach IV, .17 Winchester Super Magnum, .17-223, .20 Tactical, .20 VarTarg, .218 Bee, .219 Donaldson Wasp, .22 BR Remington, .22 CHeetah, .22 Remington Automatic, .22 Remington Jet, .22 Spitfire, .22 Winchester Automatic, .22 Winchester Centerfire, .221 Remington Fireball, .222 Remington Magnum, .222 rimmed, .223 Remington, .224 Boz, .225 Winchester, .240 Apex, .240 Weatherby Magnum, .243 Winchester Super Short Magnum, .244 H&H Magnum, .246 Purdey, .25 NAA, .25 Remington, .25 Stevens, .25 Stevens Short, .25 Winchester Super Short Magnum, .25-06 Remington, .25-21 Stevens, .25-25 Stevens, .25-35 Winchester, .256 Newton, .260 Remington, .264 Warrior Magnum, .270 British, .270 Weatherby Magnum, .270 Winchester Short Magnum, .275 H&H Magnum, .276 Enfield, .276 Pedersen, .280 British, .280 Remington, .284 Winchester, .30 Newton, .30 R Blaser, .30 RAR, .30 Remington AR, rifle cartridge, 

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Location: KML, Cluster Map, Maps,

Frameless

Type	Subtype	Date	Description	Notes	Source