When I run strikes with just one Heavy Ammo Finder, with thunderlord, I tend to stay around 75 to 125. I have to basically save it for the boss. But rocking two of them, I get to the full 200-something.. and that’s with hitting occasional headshots with it to proc enhanced heavy lifting. What I do think is happening though is there’s only a certain amount of ammo boost you can get overall, and they are split. So, usually I’m rocking 2 special ammo finder 1 heavy finder and I get alot less heavy. Or 2 heavy finder 1 special, and I find it hard to keep my loaded question full. If I rock 1 of each, maybe it will balance out. I’m going to try it today. But based on the way Bungie has done things in the past — for example with the Prime Engram buff or with Ammo Reserves — they like to put a cap limit on things. Like lets say putting an Ammo Reserve on a Fusion will do nothing if you already have a battery perk on it you just won’t go past 8 shots. Or, if you try to farm Prime Engrams, the game will automatically make you get LESS drops for a few days after that (this one is not a guess it was stated by Bungie) So, my guess is.. lets say you can only get upto a certain amount of % of more ammo. So lets say you can only ever get like 50% more ammo. Then rocking two diff finders would split the percentage 25/25% instead of BOTH being 50% each. And so trying to stack 3 or more of one type would become a “law of diminishing returns” so that the more you stack, the less it actually adds on top.. maybe with three each is like 17%, etc dyc etc This is currently supposedly how mods works. Like rocking 5 super mods.... SUPPOSEDLY the last 2 don’t add as much onto your charge time as the first 3. This is all speculation. But for sure, in my experience, stacking 2 ammo finders doesn’t just make it Not work at all.

I honestly dont think the ammo finders work at all.. sometimes I will get alot of one type of ammo while running that particular perk, and then same perk and no ammo the next time. Heavy ammo seems the most inconsistent, so I honestly feel that the perks dont work at all and its still just RNG in the game.

Do they work at all I s better question.

No. Heavy ammo and special ammo perks DO NOT stack. [b][i][u]Important[/i][/u][/b] if you have just ONE primary ammo finder perk on an armour it breaks your ammo drops. Since Primary Ammo already has a significantly increased drop rate, this perk makes it impossible for heavy or special to spawn.

No one knows and Bungie hasn't said anything. Testing proves to be wildly inconsistent as the "chance" is never stated by any percent values, but people say that putting on more than one Heavy Ammo Finder is a no-no because they cancel each other out.