I had one of those for a short while. Found it would throw 62gr factory ammo through the target sideways at 25 yards.
CZ hedges a bit saying the rifle will handle 5.56 PRESSURE while not saying it will handle 5.56 ammo.
WAG, the primers are a little thin. Seems all the manufacturers have had that problem lately.
A few years ago they started putting 1:9 barrels on the 527. One reason I am hoping it's the primer and not anything else is that the groups I got with the 62 gr TTSX loaded for 5.56 were amazing.
