Underwood 115gr Lehigh Defense Xtreme Penetrator 12/09/2015

The_Shadow · December 09 2015 08:03:16 PM MST

Cartridge is from Ammo Manufacture: Underwood 115gr Lehigh Defense Xtreme Defender (100% solid copper)
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 Lehigh Defense Xtreme Defense
Actual weigh 115.2 grains Crimp Diameter 0.3995"
4 power bands / 3 grooves 0.3645"
MEPLAT 0.2100" (wide cross) (inner cross) 0.1200" / concave base 0.1125"
C.O.A.L.: 1.2645" / 1.2605"
Primer: Large Pistol Nickel color
Case: Diameter 0.4215" Crimp Diameter 0.4225" (Light Crimp)Length 0.9870"
Powder Description/Positive ID/Type/Charge Weight: ? Ramshot Silhouette ? 12.6 grains

Cartridges provided by ElCoyote

Intercooler · December 10 2015 10:54:31 AM MST

Is this a new one? What gives the detail for Silhouette?

The_Shadow · December 10 2015 11:46:52 AM MST

Basing it on Ramshot's data for the 135 grain bullet bullets making 1575 fps using Silhouette. This 115 grain bullet is 20 grains lighter, has friction reducing power bans and a concave base...using this 12.6 gr. charge should be close to advertised.

Ramshot Silhouette
135 NOSLER JHP 9.9grs @ 1,440 fps and 11.0 grains @ 1,575 35,900 PSI 1.260"

Intercooler · December 10 2015 02:50:55 PM MST

The Crossfire 125gr would be close to that at 11.8. Do they equal up pretty good?

The_Shadow · December 10 2015 03:00:03 PM MST

What velocity did you get with the Crossfire 125's?

Intercooler · December 10 2015 03:21:03 PM MST

CROSSFIRE GRENADE 125 SINTERFIRE FRANGIBLE 1,700 1,713 1,777 815 877 RAMSHOT SILHOUETTE 11.8 9.5" 0 19.0 http://youtu.be/tRxDxyw-sxM

1713 FPS out of the 4.75" barrel.

Intercooler · December 17 2015 04:12:32 PM MST

Are these Penetrator or Defender?

The_Shadow · December 17 2015 08:23:12 PM MST

I modified the original post to reflect them calling the Lehigh Defense Xtreme Defense bullet the Xtreme Defender...

Quick 2 · May 18 2016 07:46:19 PM MDT

This one has me interested but why did Kevin push this one to 1700fps when Lehigh has theirs going 1500fps and 18' of penetration? I though the whole idea of the ED was to have the same PWC but less penetration? Velocity goes up penetration usually is more. Thats is why I wasn't interested in the EP for SD unless I could get 3 or 4 BGs to line up just right. And I wonder why they are not offering the H.E.R.O. in a 10mm?

The_Shadow · May 18 2016 07:57:08 PM MDT

The reason he shows 1700 fps is to appease those who want the fastest...that is all!

Quick 2 · May 20 2016 12:13:12 PM MDT

Have you ran these through a chrono? I have some of these bullets on the way and I figured 10 grs of LongShot should put it around 1500fps going to see anyways. I have a few others I need to run and just haven't had the time. Hopefully next week I can get them ran. Lehigh doesn't list Rimshot on there load data and the only powder that they list 12.2 grains is Blue Dot. And you would definitely know if it was Blue Dot. I know this is Underwood and Lehigh is from a 4.6" barrel. Wished I could get a factory recipe on LongShot or 800X.

Quick 2 · May 21 2016 08:20:27 AM MDT

Are you guessing Ramshot Enforcer or Silhouette? First thing that I thought of was Competition wished Accurate didn't have 3 different Rimshot powders. I don't and have never used them and I new there was no way it could be 12.2grs of Competition that powder is way to fast burning for 12.2grs. That would even be a lot of Enforcer.

The_Shadow · May 21 2016 10:27:01 AM MDT

Quick 2, To be absolutely positive I would have to work up and test based on what was found inside the pull down.
However I don't have the Silhouette powder or 115gr Lehigh Defense Xtreme Defender bullets to conduct the testing.

Consider this loading with Ramshot Silhouette
135 NOSLER JHP 11.0 grains @ 1,575 fps 35,900 PSI 1.260"

The 115gr Lehigh Defense Xtreme Defender bullet being lighter and less friction using 1.6 grains more powder...

Understand that these bullets are turned on a lathe and only have a few bore riding belts, this reduces friction while making the seal...Therefore they can obtain higher speeds.

Quick 2 · May 22 2016 04:24:56 PM MDT

Totally agree about the reduced friction and Lehigh's site says they can be pushed to 4000fps. i don't want to be the one testing the 4000fps out of a handgun. I have a box of the Extreme Defenders and looking at a 800X and a LongShot load at Underwood 1700fps. I will PM you the recipe and some pics of the brass after I settle on what I get. I didn't see the Silhouette after the Ramshot my ADHD meds must have worn off when I looked at that one. And 12.2 grs of Silhouette sounds about right but I haven't looked at the pics of the powder yet it wasn't LongShot or 800x so I didn't pay a lot of attention to the pics.