Cartridge is from Ammo Manufacture: Underwood 165gr Speer TMJ
Ballistics Information: 10mm Auto
Muzzle Velocity: 1400 fps
Muzzle Energy: 718 ft. lbs
Brass Make/Headstamp: Underwood - Brass
Bullet Make/Weight/Construction/Info; Length 0.5575"/Dia. 0.4000": Speer 165gr. TMJ
Actual weigh 163.8 grains  Crimp Diameter 0.3995"
C.O.A.L.: 1.2555"
Primer: Nickle color
Case: Diameter 0.4220" Crimp Diameter 0.4225" Length 0.9880"
Powder Description/Positive ID/Type/Charge Weight: LongShot  10.2 grains (New for Underwood)

Interesting. I didn't realize he switched this one.