Sig P322 with the SG Shot timer - ran flawlessly with CCI standard velocity

Practicing some low ready shots with the Sig P322 22LR pistol. I've had a bunch of issues with this pistol since I got it. Everyone recommended using CCI Stinger 32gr so I bought 5000 and it couldn't get through a single magazine without issues. I also tried some 38gr which ran better, but 40gr definitely works best for me. I also tried some Aguila 40gr which runs good, but not as reliable as the 40gr CCI.