Range report - hydrashoks
Last night, while at the range, I decided to test a few rounds of premium ammo in my CZ40. Gun history is short. Its my first pistol, purchased recently, and I am probably a little too liberal with the CLP Breakfree. Have shot about 250 rounds of Winchester white box ammo through it prior to last night.
I started out with some Speer (20 rounds), looked a lot like the hydrashoks. No problems with these. 2 10 rnd clips, made holes in paper, everything was good.
I then shot 7 rounds of prefragmented rounds, I don't remember the make, but they they fed without any problem, and felt more powerful than any of the other ammo I shot that night. Big noise!
Then I shot 16 rounds of hydra shok... on the third round (1st clip loaded with only 6 bullets), the slide didn't return all the way forward. The tip of the bullet was resting against the ramp, and there was some dirty oil there. A small amount of pressure on the slide allowed it to return forward, chamber the round properly, and then it fired the rest of the clip without incident. Second ( different, fully loaded with 10 bullets ) clip repeated the same failure around the 4th shot, and again on the 7th. Both times problem was solved by lightly pushign forward on the slide.
I then shot 70 rounds of Winchester white box ammo through the gun, using both clips, with no problems.
After talking to one of the employees at the range, he advised me that the gun was still relatively new, and that it may still need to be 'broken in'. I returned home, took it apart, and cleaned it all out, this time I blew it clean with compressed air after oiling it to keep the coat very thin. Will repeat the ammo test in the future to see if I can reproduce the problem.
I figure I've got a few choices:
1) Stop using Federal Hydra Shok ammo.
2) Keep the oil light and repeat test.
3) Polish ramp and repeat test.
4) Change out spring for a stiffer one and repeat test.
5) Put another 300 rounds of FMJ ammo through it and repeat test.
Gepzo