I am using an RCBS 5-0-5 scale, (will be getting a digital in the future) Berry's 180 gr hollow point, set at 1.133~ This depth worked fine with Tite Group but i don't know what the FPS was with Tight Group because i didn't have a Chrono when i first started into reloading. I am using a Dillon 650 with Dillon dies.
I thought maybe i should either seat them a little lower to build up a little pressure or just use more powder but I'm not sure which direction to go.
to answer you question about the slide functioning - some times the slide will not eject the fired case or not feed the next bullet into the chamber or the spent brass barely clears the ejection port , sort of slow motion like, (the slide feels a little sluggish if that makes sense)