I’ll do my best.
BR is a weapon best used in mid-close range combat. It fires in a 3 shot burst and uses hitscan. 5 shot kill.
The DMR is a single shot weapon, very accurate at long ranges. 5 shot kill, I believe.
The Lightrifle acts as a hybrid. 3 shot burst out of scope, like the BR. Single shot in scope. I don’t remember the kill times, but I think I remember something like 5 shot out of scope and 4 shot in scope. Not sure though.
It really depends on playstyle. For accuracy, DMR probably wins, especially long range. For close quarters, the BR is a better choice unless you’re really good with the DMR. Lightrifle… pretty much in between. Depends on how you’re scoped.
I don’t know any kill times… but:
Assault Rifle: 32 shot clip, very powerful close range.
Storm Rifle: Very powerful and fast close range, it overcharges quickly with continuing fire, but if you’re hitting your shots that shouldn’t interfere.
Suppressor is similar to them. Powerful up close. I can’t remember anything else about it though… sorry.
So that really depends on your favored weapon, Human, Covie, or Promethean. I don’t recall any major differences.
Magnum: (8) size clip. It can zoom, and is pretty accurate in closer/mid ranges. Last I knew it was a 6 shot kill I think, as its meant as a secondary, cleaning up kills weapon.
Plasma Pistol: Same as usual, fast fire rate normally, but it overcharges. The overcharge shot is still similar with an EMP effect, but I believe the tracking is nerfed, not as much as it used to be.
Boltshot: Similar to the Plasma Pistol. Fast firing shots normally. I believe its a (10? )shot clip. There is an overcharge function. When you overcharge it, you can not hold it… it fires automatically. The overcharge shot fires a close range blast that is pretty powerful (so I heard). This shot takes up about half the clip.
I hope that helped. I’m not 100% certain on some of the information, but I think I got the main idea.