Author Topic: Underwood 115gr Lehigh Defense Xtreme Penetrator (100% solid copper)  (Read 1218 times)

The_Shadow

  • Moderator
  • Sharpshooter
  • *****
  • Posts: 7282
    • View Profile
Cartridge is from Ammo Manufacture: Underwood 115gr Lehigh Defense Xtreme Penetrator (100% solid copper)(supplied by Chucky 2 11/20/16)
Ballistics Information: 10mm Auto
Muzzle Velocity: 1700 fps
Muzzle Energy: 737 ft. lbs
Brass Make/Headstamp: Underwood - Nickel
Bullet Make/Weight/Construction/Info; Length 0.6270”/Dia. 0.3995”: 115gr XP
Actual weigh 115.0 grains  Crimp Diameter 0.3995” 
4 power bands / 3 grooves 0.3645”
MEPLAT  0.2115” (wide cross)  (inner cross) 0.1175” / concaved base 0.1250”
C.O.A.L.: 1.2665”
Primer: Large Pistol Nickel color
Case: Diameter 0.4220” Crimp Diameter 0.4220” (Light Crimp)Length 0.9870”
Powder Description/Positive ID/Type/Charge Weight: Ramshot Silhouette  12.2 grains  (We saw 12.6 grains in another lot)







The "10mm" I'm Packin', Has The Bullets Wackin', Smakin' & The Slide is Rackin' & Jackin'!
NRA Life Member
Southeast, LoUiSiAna

Intercooler

  • Moderator
  • Sharpshooter
  • *****
  • Posts: 7220
  • 10mm, when you care enough to send only the best!!
    • View Profile
Re: Underwood 115gr Lehigh Defense Xtreme Penetrator (100% solid copper)
« Reply #1 on: November 21, 2016, 12:52:42 AM »
Interesting! So this one had .4gr's less powder. If it had 12.6 instead, that might make actual rating?

chucky2

  • Jr. Member
  • **
  • Posts: 150
    • View Profile
Re: Underwood 115gr Lehigh Defense Xtreme Penetrator (100% solid copper)
« Reply #2 on: November 23, 2016, 07:10:07 AM »
Thanks for doing the pulldown!  Second on the wondering if this was loaded at the last one that was pulled down, if it'd hit advertised velocity.

The_Shadow

  • Moderator
  • Sharpshooter
  • *****
  • Posts: 7282
    • View Profile
The "10mm" I'm Packin', Has The Bullets Wackin', Smakin' & The Slide is Rackin' & Jackin'!
NRA Life Member
Southeast, LoUiSiAna

chucky2

  • Jr. Member
  • **
  • Posts: 150
    • View Profile
Re: Underwood 115gr Lehigh Defense Xtreme Penetrator (100% solid copper)
« Reply #4 on: January 05, 2017, 02:18:03 PM »
Holy crap!  I can't watch the video right now...was that my ammo or something different from Underwood?

Also, I just noticed...the thread title and OP have a type in them.  The stuff I sent isn't the Xtreme Penetrator, it's the Xtreme Defender.  The XP is 140gr, the XD is 115gr (at least at the time of this posting).

The_Shadow

  • Moderator
  • Sharpshooter
  • *****
  • Posts: 7282
    • View Profile
Re: Underwood 115gr Lehigh Defense Xtreme Penetrator (100% solid copper)
« Reply #5 on: January 05, 2017, 07:41:10 PM »
No Chucky it was not your ammo that blew, just some other UW like it...  Bullet was undersize and had setback that led to blowout failure.
The "10mm" I'm Packin', Has The Bullets Wackin', Smakin' & The Slide is Rackin' & Jackin'!
NRA Life Member
Southeast, LoUiSiAna