What is the fastest caliber cartridge from the factory in the world?

Answer 1

The rail gun can fire a bullet at mach 10; this makes it the gun with the fastest muzzle velocity.

However the fastest cyclic rates belongs to FireStorm, a weapon system developed by Australian weapons manufacturer Metal Storm Ltd. Firestorm can be adapted for any standard caliber rounds currently used, from 5.56mm NATO assault weapons to 40mm grenade launchers, and potentially larger howitzer platforms.

The small arms version of firestorm is designed with multiple barrels, stacked in rectangular blocks for 30 or more barrels that are electronically fired. It can maintain a cyclic rate of 1 million rounds a minute for as long as ammunition packs can be loaded. The only reduction in cyclic rate is currently determined by the size of round. The larger the round, the slower the rate.

Answer 2

There is some disagreement about the highest muzzle velocity factory loaded rifle cartridge. The .204 Ruger claims a velocity of 4225 feet per second, However, there is a factory load for the .220 Swift that claims 4665 feet per second. Remington also loads a 30-06 Accelerator- a 55 grain saboted bullet, with a claimed MV above 4000 fps. At the extreme edge of high velocity, different barrel lengths will begin to play a major role in speed. Anything above 4000 fps is DARNED fast!

Answer 3

You will need to expand your question to inlcude whether you mean factoy, custom or handloaded.

Answer 4

Atchison Automatic