Unless theyve buffed the semi auto damage, id rather use bolts
it takes 3 shots with a bolt action to kill a premium, so you may as well mag dump with a semi auto.
Unless that semi-auto is a pistol, in which case you need to use 4 shots for a non-premium because whoever set pistol damage doesn’t understand firearms.
3 shots from a bolt is the same damage as 5-6 from a semi auto, and the semi autos recoil was pretty bouncy. So either way its half a clip/mag to kill. I’d rather be able to peak out of cover, pop off a shot, and hop back in cover while my soldier operates the bolt than sit there in the open, but thats personal preference
when you shoot him, they already got 50 kills 
well in many times when play in conqest mode whether it was in birch grove or beloe lake the place where the B point is open and uncoverd my whole squad would be hammerd all the time in B because some spawn camper has an engineer in his mortar squad and he keeps getting new ammo after using the mortar he would make around 50 kills in the end of the match with zero death and being a camper i think the should limit the time you refil your ammo
Well that’s on the people he killed. The mortar sound is quite distinct and you have between 5 and 10 seconds to take cover if you hear it. You can also use those 5-10 seconds to figure out where the mortar is being fired from and head towards that location. By the time his 4th shot or so lands, you should be closeby.
I encountered that mortar +/- a month ago. Since then nothing. If poeple hadn’t unlock mortar in month it means that they don’t want to. Sure, most of them don’t have enough time but ONE mortar since the beggining of the campain? It can’t be caused just by girnd.