The only factory ammo I ever used in my CZ was PRVI. It is slow and seemed a little dirty but accuracy was outstanding.
I can vouch for PRVI being slow. The 140s I graphed were 2225-2250 fps.
Jerry
That's slower than any 6.5x55 factory ammo I ever chrono'd. The slowest I recall was Wolf at 2,479 fps. Hornady Custom came in at 2,512 the last time I tested it. I believe everything else I tested was between 2,550-2,590 (all 140g ammo).
I always thought ~2,500 fps was a bit sad for factory ammo. 2,250 is pathetic.
