Older Underwood 200gr Speer TMJ with 800X

Started by The_Shadow, June 08 2025 11:37:08 AM MDT

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The_Shadow

Cartridge is from Ammo Manufacture: Underwood 200gr Speer Unicor TMJ (drsjr1969 David)
Ballistics Information: 10mm Auto
Muzzle Velocity: 1250 fps
Muzzle Energy: 694 ft. lbs
Brass Make/Headstamp: Underwood  – Brass
Bullet Make/Weight/Construction/Info; Length 0.6600"/Dia. 0.4000": 200gr Speer TMJ
Actual weigh 200.0 grains  Crimp Diameter 0.3970"
MEPLAT  0.2540"  (concave base)
C.O.A.L.: 1.2555"
Primer: brass color
Case: Diameter 0.4215" Crimp Diameter 0.4220" (med crimp)Length 0.9860"
Powder Description/Positive ID/Type/Charge Weight: 800X 9.0 / 9.2 / 9.4 grains









The "10mm" I'm Packin', Has The Bullets Wackin', Smakin' & The Slide is Rackin' & Jackin'!
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