I also use Titegroup, for my 9mm, .38's and .357 Mags. Doesn't work in .40's, so there I use Accurate #5.
For whatever reason, my short drops show up in the 9mm loads, and sometimes in the .38's. I am catching the little devils now, by lighting the batch before corking them up. Still using my Classic Turret as a single stage, which I really don't mind, as I can keep a closer eye on what I'm turning out.
I never have this problem with the .40's and the A#5 powder, using both a disk for 180 gr bullet, and the charge bar for 155 gr.
I load only lead, as our indoor range restricts one to using lead only. I guess the cardboard stop can't handle any jacketed rounds.