+++++
UPDATE+++++
Ok, the range trip #2.
I brought my CZ52 (with stock grip, not the wood grip I use for the photo) and Norinco Tok. Both have been clean and lube right before the trip.
The ammo still the same Romanian '80 surplus ammo from the same can.
The distance were 21 feet on all the target.
Same shooter, me.
Here are my targets: 8" x 11" xerox paper:
Tok, slow fire, one mag
Tok, slow fire, 3 mags
CZ, slow fire, one mag
CZ, slow fire, 3 mags
Here are my diagnosis:
my CZ barrel were fine, no bulge, no rust, no pits. Rifling were fine, though getting a NIB spare barrel might be a good investment for this pistol. The sights, rollers, cam, all fine, no noticeable damage.
My accuracy issue were mostly due to the hard trigger pull and CZ52's unique recoil system. It really take some practice to get used to it. For some reason I was more prone to flinch with CZ than Tok.
Also, I notice with CZ52's stock grip, after recoil, the grip moved slightly, so I have to keep re-adjusting my hands and that too made me lesser accurate on my aim. This is none issue with the wood grip.