Big Guns have a very high damage potential. They are quite bulky, so you better be quite strong to bring along both weapon and a good deal of ammo.

Machine Guns

M60. This relatively light machine gun was prized by militaries around the world for its high rate of fire. This reliable, battlefield-proven design, was used on vehicles and for squad level fire-support. Min ST:7. It weighs 30 pounds. Burst :30 rounds, Ammo: 30-100rd clip, OR 150-200rd Drum x 7.62mm
Damage/Range: Point Blank: 36 dmg,
Sml: 100yds(x3yds)=27 dmg,
Med: 200yds(x6yds)=18 dmg,
Lng:300yds(x9yds)=9 dmg,

Light Support Weapon. This squad-level support weapon has a bullpup design. The bullpup design makes it difficult to use while lying down. Because of this it was remanded to National Guard units. It, however, earned a reputation as a reliable weapon that packs a lot of punch for its size. Min ST:6. It weighs 22 pounds. Burst :33 rounds, Ammo: 30-100rd clip, OR 150-200rd Drum x 5.56mm
Damage/Range: Point Blank: 28 dmg,
Sml: 150yds(x2yds)=21 dmg,
Med: 300yds(x4yds)=14 dmg,
Lng:450yds(x6yds)=7 dmg,

Bozar. The ultimate refinement of the sniper's art. Although, somewhat finicky and prone to jamming if not kept scrupulously clean, the big weapon's accuracy more than makes up for its extra maintenance requirements. Min ST:6. It weighs 22 pounds. Burst :25 rounds, Ammo: 30-100rd clip, OR 150-200rd Drum x 7.62mm belt.
Damage/Range: Point Blank: 40 dmg,
Sml: 200yds(x1yds)=30 dmg,
Med: 500yds(x3yds)=20 dmg,
Lng:700yds(x5yds)=10 dmg,

Heavy Guns

Flamer. A Flambe 450 model flamethrower, varmiter variation. Fires a short spray of extremely hot, flammable liquid. The flamethrower canisters only hold fuel for 5 shots, Min ST:6. It weighs 28 pounds.

Damage at Range:
Point Blank: 3dmg/rd for 5rds ,
Sml: 15yds(x3yds)=3dmg/rd for 3rds @ 3yrds,
Med: 30yds(x6yds)=3dmg/rd for 2rds @ 6yrds,
Lng:45yds(x12yds)=3dmg/rd for 1rd @ 9yrds

Avenger Minigun. Rockwell designed the Avenger as the replacement for their aging CZ53 Personal Minigun. The Avenger's design improvements include improved, gel-fin, cooling and chromium plated barrel-bores. This gives it a greater
Range and lethality. Min ST:7. It weighs 30 pounds. Burst :110 rounds, Ammo: 120 x 10mm belt
Damage/Range:
Point Blank: 50 dmg,
Sml: 100yds(x6yds)=37 dmg,
Med: 200yds(x9yds)=25 dmg,
Lng:300yds(x12yds)=12 dmg

Vindicator Minigun. The German Rheinmetal AG company created the ultimate minigun. The Vindicator throws over 90,000 caseless shells per minute down its six carbon-polymer barrels. As the pinnacle of Teutonic engineering skill, it is the ultimate hand-held weapon. Min ST:7. It weighs 30 pounds. Burst :200 rounds, Ammo: 100 x 4.7 mm Caseless Belt
Damage/Range:
Point Blank: 60 dmg,
Sml: 100yds(x6yds)=45 dmg,
Med: 200yds(x9yds)=30 dmg,
Lng:300yds(x12yds)=15 dmg

M79 Grenade Launcher. M79 Grenade Launcher. A single shot grenade launcher. Min ST:5. It weighs 4 pounds.
Range: Sm:30yrds, Med:60yrds, Lng:100yrds,
Damage within Radial Area of Effect: 5dmg @ 3yrds, 3dmg @ 6yrds, 2hlth @ 9yrds
Ammo: 1 x 40mm Grenade

Rocket Launcher. A Rockwell BigBazooka Rocket Launcher. With the deluxe 3 lb. trigger. Fires AP or Explosive Rockets. Min ST:6. It weighs 18 pounds.

Range: Sm:40yrds, Med:80yrds, Lng:120yrds,
Damage within Radial Area of Effect: 15dmg @ 3yrds, 10dmg @ 6yrds, 5dmg @ 9yrds, 5hlth @ 12yrds
**15 yrd Rear Damage Area: 2dmg!**
Ammo: 1 x Rocket (AP or explosive)