Cartridge is from Ammo Manufacture: American Eagle 180gr Federal FMJ
Ballistics Information: 10mm Auto
Muzzle Velocity: 1030 fps
Muzzle Energy: 425 ft. lbs
Pictures: Before/After disassembly:
Brass Make/Headstamp: Federal - Brass
Bullet Make/Weight/Construction/Info; Length 0.6000"/Dia. 0.4005": Federal 180gr. FMJ
Actual weigh 180.0 grains  Crimp Diameter 0.3985"
Nose meplat 0.2670"
C.O.A.L.: 1.2515"
Primer: Nickel color
Case: Diameter 0.4205" Crimp Diameter 0.4200" Length 0.9870"
Powder Description/Positive ID/Type/Charge Weight: (propriatary)? 5.8 grains

Hodgdon HP-38 and Winchester 231 are shown with this weight charges with slightly more velocity 1061 fps

HP-38 is very close match for this powder used in the Federal AE

Maybe WSF?

No you would need more WST to get those numbers!  It does look like HP-38 as compared to my reference files, But Federal may have had the powder blended to their specs. 

Yeah, after I pondered it for a bit after posting I kind of decided the same in my own mind.

Fun stuff nonetheless!