oh its a charging cannon… ugh…
dont get me wrong, it can be strong but if this gun is used on enemy vehicles in events then its going to be brokenly overpowered like the kaiju was. no joke the kaiju boss in the last event was broken as hell and could 1 shot you.
if this works like the kaiju then… ok i guess? but that perk on it is just terrible.
think about it, its a MULTI SHOT cannon that if you even miss just ONE of those projectiles then your damage bonus goes away. on top of this the bullets fly on a ballistic trajectory… for a charging cannon thats really bad. i think this gun is just going to be another in the junk pile.
plus it only raises damage to a max of 21% and if it only raises the damage by 21% max then this gun must be super powerful. but man the accuracy needs to be perfect to get those damage bonuses.
“charging the shot increases the damage”
this is already a bad sign, how much damage does it do uncharged then?
“impulse and the speed of the projectile”
so it has impulse, but how much? will it be like the toadfish or the spike? also the speed of the projectile? so the bullet will fly further? … already not liking this weapon… 
as for the cabin i had a look at it and just found it… so weird and awkward… to start off you take 25% more damage but as you deal damage you start taking less damage. this would be good in pve like in raids as you can use a weapon like the jotuns to get that bonus pretty quickly. in certain maps you dont even need to worry that much.
but the thing is… damage protection… does this mean resistance to damage? or does it mean something else?
because to start off you end up taking 25% more. but in the end with all the charges you have 75% damage protection (before you call me an idiot i know its 100% damage protection but im taking off the 25% to start thus i get 75%). so does it mean it negates 75% of incoming damage? do other resistances boost this as well? these guys really dont word things to well or im just very dumb.
also the cabin looks so… awkward… its such a weird design. idk how you could build with it but i know someone out there could make it work.
this seems to be getting far to popular now. im seeing endless teammates just ramming into enemies blocking ally fire and just being assholes in general. idk why so many people do this but its rather irritating.