Long Tom Artillery Piece

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Long Tom Artillery Piece
Production information
Type Artillery
Tech Base Inner Sphere/Clans[1]
Year Availability Pre-Spaceflight[1]
Technology Rating B[1]
Availability Ratings C[1]/C[1]/C[1]
Technical specifications
Heat 20[2]
Damage 25/15/5[3]
Minimum Range -
Short Range -
Medium Range -
Long Range 30 Maps[2]
Tons 30[1]
Critical Slots 1 (Combat Vehicles);
15 (Support Vehicles)[1]
Ammo Per Ton 5[2]
Cost (unloaded) 450,000[1]
Ammo Cost (per ton) 10,000[1]
BV (1.0) ?
BV (2.0) Clan = 560[4]
46 (Ammo)[4]

IS = 368[5]
46 (Ammo)[5]


The Long Tom Artillery Piece is the largest conventional artillery piece designed by Armstrong Industries. It is the primary weapon of the LT-MOB-25 Mobile Long Tom Artillery vehicle, which is better known as the Mobile Long Tom.

It was also the primary heavy artillery unit of the first Star League Defense Force.[6]

A Long Tom III artillery piece is also mounted in the top (forward) section of Fortress class DropShips, giving them significant firepower on the ground.[7]

Game Rules[edit]

The Long Tom is the largest Artillery piece that can be mounted on a vehicle, taking up 15 critical slots on a support vehicle. It also has the longest range of any non–Cruise Missile type weapon. It deals the highest damage of conventional tube artillery, at 25 damage with direct impact using conventional (high-explosive) ammunition.

The Long Tom artillery's ammunition options include Smoke, Anti-Personnel, Illumination, Copperhead, Flechette, Thunder/FASCAM, Cluster, and High Explosive Rounds (High Explosive rounds considered the "Standard" rounds for tube artillery).

The Long Tom can also fire Davy Crockett-M tactical nuclear devices but these are significantly heavier than normal conventional rounds (represented in game rules by being one shot per ton unlike normal rounds) but other than their nuclear weapon effects behave like normal rounds.


The Artillery Piece is manufactured on the following planets:

Brand Planet Company Used by References
Long Tom Rifle Bainsville Armstrong Industries ??? [citation needed]


  1. 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 Tactical Operations: Advanced Units & Equipment, p. 217: "Heavy Weapons and Equipment Construction Data"
  2. 2.0 2.1 2.2 Tactical Operations: Advanced Units & Equipment, p. 216: "Heavy Weapons and Equipment Combat Data"
  3. Tactical Operations: Advanced Rules, p. 152: "Artillery Ordnance Table"
  4. 4.0 4.1 Tactical Operations: Advanced Units & Equipment, p. 197: "Clan Weapons and Equipment BV Table [Addendum]"
  5. 5.0 5.1 Tactical Operations: Advanced Units & Equipment, p. 195: "Inner Sphere Weapons and Equipment BV Table [Addendum]"
  6. Technical Readout: 2750, p. 102: "Chaparral"
  7. DropShips and JumpShips: ComStar Intelligence Summary, p. 50