Cartridge is from Ammo Manufacture: Double Tap 180gr  Montana Gold JHP  (Provided by Rome)
Ballistics Information: 10mm Auto
Muzzle Velocity: 1250 fps
Muzzle Energy: 625 ft. lbs
Brass Make/Headstamp: Double Tap - Nickel
Bullet Make/Weight/Construction/Info; Length 0.6180"/Dia. 0.4000": 180gr. MG GS BJHP 
HP depth 0.1230" / inside Tapered Dia. 0.0765" / mouth Dia. 0.1820"
Actual weight 180.0 grains   Crimp squeezed bullet to 0.3995"
C.O.A.L.: 1.2420"
Primer: Brass color
Case: Diameter 0.4210" Crimp Diameter 0.4185" (Tight) Length 0.9875"
Powder Description/Positive ID/Type/Charge LongShot Weight: 8.6 grains
Intercooler's test results...Limited Pro 4.75" Double Tap 180gr Golden Saber 8.6gr's Long Shot Average = 1189 FPS/ 565 LBS

Was this one on my sheet?

Quote from: The_Shadow on July 31 2013 09:16:24 PM MDTCrimp squeezed bullet to 0.3950"

That's a lot compared to what I'm used to myself.  Was the bullet indented from the tight squeeze?

Quote from: Intercooler on August 01 2013 06:56:21 AM MDT
Was this one on my sheet?

No this came from Rome's package...

Redline good catch, I was using the 165 golden saber sheet as a starting point, I'll correct it to 0.3995"

Looks similar to what was found in their other 180's.

Do you have a couple to chronograph?

It was only the one cartridge. 

Should be around 1220. Let me know what you get.

Updated the orginal data to add Intercooler's test results...EAA Limited Pro 4.75" Double Tap 180gr Golden Saber 8.6gr's Long Shot Average = 1189 FPS/ 565 LBS

I wonder why DT puts such a heavy crimp on all of their 10mm loads?

I am sure he is trying to get more pressure with less powder and to provide better ignition properties, however the main reason is to eliminate "Bullet Setback" issues.  Yes it can happen...think about how many people are seeing bullet jam into the feed ramps or to one side of the barrel as the cycle.  Then think about constant loading and unloading of the firearm, this can also cause bullet movement.  The deeper the bullet goes, the more pressure is created upon firing.

This was listed as a controlled expansion bullet