The Firing Line Forums - View Single Post - I tested velocity of multiple 223/5.56 ammo

T. O'Heir · January 14, 2020, 03:11 PM

Hornady Superformance ammo used to be called Lite-Magnum. It's hot ammo to start with.
All ammo velocities are averages of loads tested, but the important part is what firearm, if there was one, the barrel length and the environmental conditions of the test day. For example, Hornady tested their .223 and 5.56 75 grain Superformance Match with different length barrels. 24" and 20" respectively. That alone will give different results.
And a 16" will always give lower velocities than an 18".

January 14, 2020, 03:11 PM	#4
T. O'Heir Senior Member Join Date: February 13, 2002 Location: Canada Posts: 12,453	Hornady Superformance ammo used to be called Lite-Magnum. It's hot ammo to start with. All ammo velocities are averages of loads tested, but the important part is what firearm, if there was one, the barrel length and the environmental conditions of the test day. For example, Hornady tested their .223 and 5.56 75 grain Superformance Match with different length barrels. 24" and 20" respectively. That alone will give different results. And a 16" will always give lower velocities than an 18".