Cartridge is from Ammo Manufacture: Underwood 155gr TMJ NFP = not for the public!!
Ballistics Information: 10mm Auto
Muzzle Velocity: 1500 fps
Muzzle Energy: 775 ft. lbs
Brass Make/Headstamp: Star Line - Brass
Bullet Make/Weight/Construction/Info; Length 0.5315"/Dia. 0.3995": 155gr TMJ
Actual weigh 154.8 grains  Crimp Diameter 0.3995"
MEPLAT  0.2500"
C.O.A.L.: 1.2515" / 1.2525"
Primer: Brass color
Case: Diameter 0.4215" Crimp Diameter 0.4220" (Light Crimp)Length 0.9900"
Powder Description/Positive ID/Type/Charge Weight: IMR800X  11.2 grains

For sure on the not for public! Make Redline's head pop off

These are rated 1600 instead of 1500 and they deliver it. In the Hunter 6" 1660 FPS.