"Unknown" Underwood 180gr Hornady XTP 1_16_2015 Pull-Down

[The_Shadow]

Cartridge is from Ammo Manufacture: "Unknown" Underwood 180gr Hornady XTP 1_16_2015 (Provided by Intercooler)
Ballistics Information: 10mm Auto
Muzzle Velocity: 1300 fps
Muzzle Energy: 676 ft. lbs
Brass Make/Headstamp: Underwood – Brass (New unfired)
Bullet Make/Weight/Construction/Info; Length 0.6200"/Dia. 0.400": Hornady 180gr. XTP
HP Depth 0.2075" / HP Dia. 0.1140" tapered / Mouth 0.2450"
actual weight 180.4 / 180.2 grains / crimp line 0.3980"
C.O.A.L.: 1.2560" / 1.2555"
Primer: Large pistol Nickle color
Case: Diameter 0.4215" Crimp Diameter 0.4215" Length 0.9865"
Powder Description/Positive ID/Type/Charge Weight: LOVEX D037-1 13.4 / 13.2 grains*

*Intercooler sent these that were included in a purchase thinking these were handloads but given that Underwood doesn't sell his brass, and the powder matches what he sent from Underwood in November I'd say these were actual Underwood loadings.  These match the newer loads that were found with LOVEX D037-1 (11/2014)
http://10mm-firearms.com/factory-10mm-ammo-pull-downs/underwood-180gr-hornady-xtp(112014)-pull-down/

[Intercooler]

I think you are right. I doubt he had access to Lovex and got confused about what was there.