- No Muzzle flash: Once again, no chemical propellant moves the slug down the barrel towards its enemy, so there is no need for a sound suppressor, or the telltale gun flashes to zero-in an enemy's position
- No moving parts: the Gauss gun could be sealed against all manner of environments, making it prefect of off-world warfare, and less prone to break downs.
- More ammo, less weight: Any military that uses Gauss weaponry would notice that everything from tanks to infantry could carry more slugs for their Gauss weapons than conventional chemically-propelled weapons. With the sabot being the only item needed, and not a bulky shell filled with gunpowder, more carry could be carried, with less weight and space.
- Power: the biggest drawback to deploying a man-portable Gauss gun for infantry or Special Operations is the power requirements for these guns to fire slug at HV speeds.
- Charging-up Delay: Real Gauss guns require a buildup to full charge, which is a delay, and delays can be deadly in combat. One can see this in the (mostly bad) movie Demolition Man, when the magnetic hand weapon takes time between each shot.
- Coil Failure: The US DARPA experimented with a 48 stage mortar...what if one or several of those coils failed with a live 81mm mortar round in side the tube. While the need for a mutli-stage coilgun to push/pull the projectile up to HV speeds, every stage as to be switched on and off at the right moment. That is a lot of ifs for a weapon system.
- Projectile Saturation: This is when the magnetic field cannot increase the magnetization of the projectile, resulting in loss of speed and effectiveness of the weapon.
Real-World Gauss Guns
If you have the talent, knowledge, and some ability, you too can build a Gauss gun of your very own! Homebrew coilguns are common on the internet, are mostly one-stage (limiting the kinetic punch of the slug) and are single-shot. I have only seen one that was a rapid-fire model, but had limited lethality. A number of this homebrew coilguns are of the "bolt-action" type and do break glass, wreck model aircraft and wooden boards.
Military Uses for Gauss Weaponry
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Here is the link to Battletech Wiki page on Gauss Rifle:
Video of a Rapid Fire Coilgun:
Video of a Rifle-based Coilgun, which is one of the best examples of Gauss weaponry:
One of the coolest and best looking Gauss rifles: