25x130mm

25x130mm is a calibre of ammunition primarily employed by the gauss cannons used by the United Nations Space Command and Colonial Military Authority.

Overview
25x130mm rounds are primarily employed by gauss cannons, which are capable of firing the projectiles at velocities of up to Mach 40. Gauss cannons capable of firing the 25x130mm include the following models;
 * M65 Gauss cannon
 * M68 Gauss cannon
 * M68B Gauss cannon
 * M70 Gauss cannon

Anvil round
When fired, Anvil rounds create an EMP pulse at the point of impact. The rounds also deal more damage than the standard Gauss cannon munitions. Sergeant John Forge modified his own personal Warthog to fire these rounds.

25x130mm AVLP/F
The 25x130mm armor-piercing, limited penetration/frangible (AVLP/F) is employed on M68 and M68B Gauss cannons.

M485 HV/FTHPP
The M485 High-Velocity/Ferric-Tungsten Hollow-Point Projectile (HV/FTHPP) is a specialised 25x130mm projectile used in M68, M68B and M70 coilguns.

Halo Wars 2
In Halo Wars 2, the Anvil round is available as the first upgrade for the Forge's Warthog hero unit. Once unlocked, the Anvil round can be fired as the vehicle's Y ability.
 * Forge's Warthog upgrade: Anvil Round
 * Info: Fires an EMP round, Slows enemy vehicles
 * Tier: 1
 * Cost: Supplies 0, Power 325

List of appearances

 * Halo 2
 * Halo 3
 * Halo Wars
 * Halo 3: ODST
 * Halo: Evolutions - Essential Tales of the Halo Universe
 * Palace Hotel
 * Halo: Reach
 * Halo 4
 * Spartan Ops
 * Halo 2: Anniversary
 * Halo 5: Guardians
 * Halo: Ground Command
 * Halo Wars 2