Sord, I played a lot of your old server, and I can honestly say that lack of ammo was NEVER a problem. You could stand on an ammo box for like 5 seconds and be completely full in that category, even if you didn't have a weapon of that type.
TT weapons suck. The projectiles always miss and the guns themselves don't look as nice as HK.
Trust me on this one, HK is what you should use.