Plasma rifles or plasma casters are high tech weapons firing superheated bolts of plasma, powered by either microfusion cells, heavy energy cells, plasma cartridges, or plasma cores which find numerous applications in military and industrial fields. Its great for sniping enemy appendages and its high. Twin is great on a gauss rifle (better than Irradiated). Variants include the plasma pistol, plasma rifle, plasma scattergun and plasma thrower. Although the Laser Rifle is pretty similar to the Laser Musket, it has faster reload and better accuracy. Irradiated is a great Legendary for a sniper, since the only things that it's not good on are Ghouls (which don't have a ton of health to begin with) and Robots (which aside from Sentries that are better taken out with a Gauss rifle from long range, I find an explosive shotgun is much better). In terms of Legendaries, it depends on your playstyle and enemies you need to use it on. A Radium rifle is another good sniper, since it does rad damage as well as ballistic, but it's lack of a suppressor makes it another sub-par weapon for stealth builds.

50 hunting rifle also does more damage, but the slow rate of fire makes it less useful.

The gauss rifle does a lot more damage, but even with the suppressor it makes quite a bit of noise, and it does splash damage as well (in a fairly small area), so it'll alert anyone close to your target. 308 combat rifle with suppressor if you want to silently kill your enemy. I've found the best rifle for sniping is a.

Fallout 4 best sniper weapon