My 1 pistol Leonidas rig for shield play at the 300 game:
12 mags, 1 pistolpod, 10 co2, dump pouch. I had 32 total mags plus the pod with other gear. Ran empty several inserts but was reloaded by teammates.
Reloading a TiPX while using a shield is quite easy and I went through a lot of paint in that target rich environment.
My favorite moment was a snapshooting duel at 20'. My opponent had a ATed pump cocker and was superbly accurate. As I was then guarding our base with one person besides myself(another Sniper shooter), I couldn't push it for fear of the 30 guys behind him! Finally our insert showed up and we were able to dig him out. I was going at him hard enough that those guys didn't form a rush past him, that would have been bad for me...
We did not win, but it was not for lack of trying. My team did me proud, inserting time and again into overwhelming odds until finally we owned the whole field and fought them at THEIR insert point.