Hello,

I noticed, that damage sticker for Incendiary and Bio types of ammo is quite big, if comparing to other weapons (rockets, capsules, cannon-shells). Yes, it is close combat (20 tiles or even less) and should have bonus, but why a dozen times?
Here is shotgun ammo vs incendiary vs high-explosive (uranium is almost the same). First two look way more serious.
https://imgur.com/aUp1TAF
I have already decreased bullet-toxic sticker damage from 5 to 2 (2.5 times bigger without change).
Every pellet applies a sticker. In the endgame it is over 50k poison damage per second (if all pellets reach the target, but vs big biters/nests or big squads it will be all 16 pellets), while rocket/cannon shell do about 5k. In terms of economics it's only 1 shell of 10. One magazine will do 500k vs 5k for almost the same resources consumed in production.
The same is about incendiary damage, also from sticker, which is good for flamethrower, but OP for guns.

Bullet damage is less effective, because of only one bullet in a shot -> one sticker applied. But still over 30k damage per magazine. Probably that is good for close combat, if not mentioning turret bonuses (technologies and gunturret mk2 multiplier).