I chronographed some of the early Norma 10MM through my then-new Colt Delta Elite back then. Indoor range, 70 degrees, 10 shot string averaged just over 1,200 fps! The 170 grainers were about 1,350, if memory serves. It was indeed some hot stuff.

The first big batch of Norma imported to the U.S. was pretty erratic. I never clocked it, but it was easy to tell that the ammo was varying from shot to shot from the muzzle flash and what seemed to be varying recoil.

The brass was very good for reloading, too.