*Damage/10 seconds takes into account weapon cooldown and duration (but not ballistic jams).
*Best Damage/ton does not account for required ammo tonnage cost as that can vary by build.

Highest Damage: Clan(Stat) / Inner Sphere(Stat)
Ballistic: C-AC/20 (20) & C-LB20-X-AC (20) / HEAVY GAUSS RIFLE (25)
Energy: C-HEAVY LRG LASER (18) / HEAVY PPC (15)
Missile: C-ATM 12 (24) / ROCKET LAUNCHER 20 (40) or MRM 40 (40)
Best DMG/Ton Clan(Stat) Inner Sphere(Stat)
Ballistic C-MACHINE GUN (4) / MACHINE GUN (2)
Energy C-HEAVY SML LASER (13) / SMALL LASER (6.5)
Missile C-SRM (6 8) / ROCKET LAUNCHER 10 (40)
Best DMG/Heat Clan(Stat) Inner Sphere(Stat)
Ballistic C-GAUSS RIFLE (15) / GAUSS RIFLE (15)
Energy C-MICRO PULSE LASER (2) / SMALL LASER (2.95)
Missile C-LRM 20 (3.33) / ROCKET LAUNCHER (20 8)
Best DMG/10SEC Clan(Stat) Inner Sphere (Stat)
Ballistic C-AC/20 (50) / ROTARY AC/5 (109)
Energy C-LRG PULSE LASER (27.97) / HEAVY PPC (30)
Missile C-ATM (12 48) / MRM 40 (84.21)