Cartridge is from Ammo Manufacture: Federal Trophy Bonded 180gr JSP (IC 3/25/14)
Ballistics Information: 10mm Auto
Muzzle Velocity: 1275 fps
Muzzle Energy: 649 ft. lbs .
Brass Make/Headstamp: Federal Cartridge FC - Nickel
Bullet Make/Weight/Construction/Info; Length 0.6000"/Dia. 0.4000": Federal 180gr Trophy Bonded JSP
MEPLAT 0.2710"
Actual weight 180.0 grains   Crimp squeezed bullet to 0.3975" (black sealant)
C.O.A.L.: 1.2535"
Primer: Nickel color
Case: Diameter 0.4205" Crimp Diameter 0.4210" (medium) Length 0.9880"
Powder Description/Positive ID/Type/Charge ? ?  Weight: 15.4 grains *
* (charge weight is more than AA#9 for this velocity) (very fine flatten ball some yellow specks)
Intercooler tested 4/1/2014
EAA Hunter 6" 1412, 1381. Average = 1396.5 FPS/ 780 LBS

15.4 grains. 

Must be a slow burning powder?

Yes this puts it around AA#9 but is more powder charge for velocity.  Still studying this powder, may be something "NEW"!

We have yellow again! Could this be a flash suppressant? In the other case where it is primer/moisture related it is all over and not specks.

Quote from: Intercooler on March 25 2014 06:21:17 PM MDT
We have yellow again! Could this be a flash suppressant? In the other case where it is primer/moisture related it is all over and not specks.

Not sure why is there...we have never gotten a definitive answer to the yellow specks we are seeing.  Is it being blended into the powders on purpose?  Is it a type of suppresant? 

Maybe your brother could shed some light from behind the curtain of ATK...

Remember I posted a response I got after sending the pictures? They don't know either 

Wow.....interesting. I did pick up 40rds of these to shoot through the chrono this weekend can't wait to see how they perform in my 29sf with StormLake barrel.

I can't wait to hear the actual velocities and performance of this one. 

It's in the ammo section.

Quote from: Popapi on March 25 2014 10:42:54 PM MDT
Wow.....interesting. I did pick up 40rds of these to shoot through the chrono this weekend can't wait to see how they perform in my 29sf with StormLake barrel.

Popapi,   welcome to 10mmFirearms.com.    Glad to have you.

What was your findings? That's if you got out to do some shooting.

If it's posted somewhere else I didn't find it.

Brian