PUBLIC Forums => Public Forums => Technical Assistance => Topic started by: Lawrence Pilcher on January 05, 2018, 10:35:29 AM

Title: Unknown projectile
Post by: Lawrence Pilcher on January 05, 2018, 10:35:29 AM

Hello to all.

I have an odd projectile found in a wall during an investigation.  I'm looking to find who made or loaded it.

0.346" - 0.354"
131.9
Closed, flat base with rounded edges
Grease groove
6 Right, Poly.

Any help would be grateful. 

Lawrence

Title: Re: Unknown projectile
Post by: Jamie Becker on January 05, 2018, 10:43:57 AM

It looks like Hornady Critical Duty at first glance with their locking band.

Title: Re: Unknown projectile
Post by: Lawrence Pilcher on January 05, 2018, 10:59:13 AM

I just pulled this Hornady this morning. 

Critical Duty is 115 grains.  This is 131.

Title: Re: Unknown projectile
Post by: Chris Gunsolley on January 05, 2018, 11:01:30 AM

https://www.hornady.com/ammunition/critical-duty# (https://www.hornady.com/ammunition/critical-duty#)!/

Edit:  That link may not render as I expected.  In any case, look at Critical Duty more closely and you'll find it at 135 grains with that profile.  You may have pulled a Critical Defense.

Title: Re: Unknown projectile
Post by: Lawrence Pilcher on January 05, 2018, 11:06:10 AM

Thanks Jamie and Chris,

The agency found Critical Defense at the scene.  (this is what I pulled)

We don't have any Critical Duty ammo here to pull, and little money for supplies...

I do know they clearly are not the same thing.  I have their chart printed out on my wall.

Anybody willing to pull a round for me?

Title: Re: Unknown projectile
Post by: James Stevens on January 05, 2018, 11:40:46 AM

Here is an image of a 9mm Critical Duty I just pulled from our collection, let me know if you need anything else.

Title: Re: Unknown projectile
Post by: Nathan Tunnell on January 08, 2018, 09:16:10 AM

Hornady used to have a pdf on their site that explained the difference. In addition, the document specified that Critical Duty has red sealant around the primers and "H" on the Flex Tips.

Title: Re: Unknown projectile
Post by: Axel Manthei on January 08, 2018, 03:53:16 PM

Lawrence,

the Critical Duty is (amongst others) identified by the two "cannelures"/grooves on the bullet. We have the 135 grs bullet in the database
The Critical Defense in 9 mm Luger is a 115 grs Hornady FTX bullet.

Please see the cutaways of both bullets in 9 mm Luger from CartWinPro for reference.
Base to bottom groove (forward edge) on the Critical Duty should be ~ 0.185"
On the Critical Defense we measured 0.274"

If you need more info please send me a PM.

Greetings
Axel

Title: Re: Unknown projectile
Post by: Jason List on January 09, 2018, 08:51:59 AM

Quote from: Nathan Tunnell on January 08, 2018, 09:16:10 AM

Hornady used to have a pdf on their site that explained the difference. In addition, the document specified that Critical Duty has red sealant around the primers and "H" on the Flex Tips.

Here is the address for the PDF file https://www.hornady.com/assets/site/hornady/images/ammunition/critical-defense/critical-duty-vs-critical-defense.pdf (https://www.hornady.com/assets/site/hornady/images/ammunition/critical-defense/critical-duty-vs-critical-defense.pdf)


I have it printed out hanging above my computer for quick reference.