Well, with just one Heavy Ammo+ and nothing else you get, if I remember correctly, 52 rounds. That's a [i]very[/i] comfortable Relentless and a bit more than a Reign of Terror if you use your ammo perfectly. The 26 round magazine can already get several kills in a row without reloading comfortably as each kill only takes 3-4 rounds. I mean, the extra ammo is nice when you're getting swarmed and need to kill ten players without reloading or when you net 15 kills in a row and need even more ammo but most of the time it just means when you die, the enemy gets more rockets from the ammo you drop. It's all preference at the end of the day, though. I'll edit it at a later date and add some emphasis that the Field Scout/Surplus builds are really good too if you can hit big streaks. Well, whenever I manage to get enough data to come to a conclusion on exactly how Heavy Ammo+, Field Scout and Surplus interact. So far it seem like Surplus adds ~25% to all Heavy ammo drops in PvP and Heavy ammo+ adds almost as much as Field Scout but not quite. But I'll need to test it myself eventually. I won't be playing a lot for a bit and the Banner is so short... ugh.