If we're going for long range engagements, I'd rather go for something that isn't a tired trope, at least for a little while.
Xcomm Ordinance Muntions "Understanding"Understanding is a class of munitions designed to go into high power sniper rifles, especially designed semiautomatic rifles or other such equipment where there is enough volume for the Guidance package and explosive payload to fit. With the specially designed rifles designed to deploy the munitions, the wielder is outfitted two additional pieces of equipment to utilize the XOMU. Number one, A large piece of computer hardware that is on the cutting edge of scientific power, this device is equipped with both a directed and unidirectional antenna designed to talk to the round while it is in flight. A tablet sized screen with an optional keyboard for the user to give manual commands to give commands to the bullet that it would otherwise be unable to figure out without. (Steer around bullet instead of going straight, etc.) The third piece of equipment is a visual/thermal Camera identifier, designed for the user to take a snapshot of the battlefield and choose the specific signature to target.
The bullet itself is equipped to totally change its aerodynamic profile, allowing it to "steer" in an otherwise impossible manner, with a combination of alien electronic pieces scavenged from surviving hardware. The payload itself is variable and can either be HEAT, Incendiary, or High Explosive, depending on the users choice.
In medium-close range, it is expected that a shot that would otherwise graze or barely miss a target to hit slightly better then before, and depending on the payload, airburst if applicable. In the long-range, the effects are dramatically increased, as a skilled user-adjusted to the rifle could make miracle shots that would be otherwise impossible, the computer takes over for operating the payloads delivery, automatically adjusting to hit either the designated target or automatically finding a signature that matches known alien intruders.
XenoCeramics(1): Blood_Librarian
ACE(2): Madman, roseheart
XPR-1 Plasma Rifle(0):
Mosquito Combat Drone(2): Cnidaros, Stabby
X-R-Drone (0):
XH1 Laser Rifle (2): Chiefwaffles, Happerry
XH1 Railgun Rifle (3): Chiefwaffles, Happerry, strongpoint
XOMU (1):Blood Librarian
MISSION DESIGN
Combined Arms (3): Cnidaros, Chiefwaffles, roseheart
Surround and siege (1) strongpoint