Hi, I'm new to these forums and I just recently purchased a CZ-SP01. Now, I put about 1000 rounds through it already, but towards the last 200, I've been experiencing several serious jams. The gun would look perfectly normal, slide forward, hammer back, trigger ready, but when I try to pull the trigger, it's locked. The slide is also locked (no the safety is not on), and it takes some finesse to eject the chambered round. For ammo, I use Winchester and Blazer Brass. I also properly clean and lube my gun. Has this happened to anyone else? Should I just send it in to be fixed or is there something else I can do? Thanks!
EDIT: I should note I have only field stripped the gun, I have never detailed stripped it.