I went shooting with a group of new shooters last week, and brought half a dozen different pistols for folks to try out so that we could rent fewer and keep cost down.
As a "thank you" to me, they gave me all the fired brass, and several partial boxes of the remaining range-bought ammo. This range sells ammo called "HPR."
My only experience with "clean" ammo has been that the primer pocket is a different size, deliberately. This is the Winchester/Federal stuff with "NT" headstamps.
So, I have been tossing brass from these sources into the brass scrap bucket rather than reloading it. I hate it when an NT headstamp makes it into my reloading pile. Screws up my rhythm on the progressive, since I have to disassemble the partially primed cartridge and then dispose of the damaged but live primer and toss the brass.
Anyone know if HPR stuff is standard dimensions, or is it a PITA like Win/Fed NT headstamps?