Originally Posted by Ascension

Bought quite a few boxes of the PPU 10MM at one time and am holding a once fired casing in my hand with a long crack in the brass as I type.

Saw several that cracked like this in the batch I got and would NOT recommend reloading this brass!!
This + they are the absolute slowest wimpiest 10mm loads I have ever run ( below normal .40 S&W velocities in fact!)and while they seemed consistent and fairly clean they shot to a different point of aim than a full power round like say Underwood.
See here as the PPU's were under 900FPS at 180 grain!
10mm ammo test chronograph stats #6 Glock 20 - YouTube
Contrast that with my normal defensive carry load here in the 180 grain Underwoods rolling in at over 1300 fps!
10mm Underwood Ammo Gold Dot 180 gr Ammo Test - YouTube