After doing a lot of testing, I've figured out that body armor works as a sort of damage resistance, rather than physically stopping a bullet. The Hit (basically damage) and Caliber (penetration) don't work as I assumed. So Caliber has no bearing on body armor, it only affects barrier penetration. So while my original data is correct in translating real world data to the game, its just the game doesn't use that data the same way.

So,I basically created a weaker 6.5 round than the vanilla. It probably flies better than the vanilla round. I'll probably be tweaking this to be closer to their intended role without being OP.

The AI doesn't want to use the belted ammo in the MK200 for some reason. I haven't attempted to fix this yet but I will take a look at this in the future.

Hey! Great mod. I just found this today while I was looking for something to give my MX rifles an extra punch as a companion to another mod that increases armor. I just noticed that there's no 100rnd mag for the SPC variant which I found to be most effective against armor. I know you haven't updated this in over two years, but may be you could look into adding that mag size for the SPC variant? Many thanks!

I did that specifically because the SPC was designed as a marksman's round. Glad you like the mod though.

I suppose it doesn't hurt to add it but that was my reasoning.

On updating, if you notice any other issues, let me know but I didn't see any reason to update as long as it's working.