I noticed that my IDPA loads were still generating a bit of end recoil wobble. It manifested as a slight up down oscillation of the front of the pistol and when I went down to an 11 lb spring it is still there but improved compared to the 13 lb spring. This is on a 5” M&P 2.0 by the way not a CZ. So far every 130 PF round has cycled properly. The brass throw is a bit variable in the distance but it’s mixed brass and the M&P has always been that way. It’s a crappy plastic pistol after all. I had ordered the 13 lb spring on advice from others with this gun, they said the 11lb was too light, but so far I have no issues
