that is completely based on your own opinion but arguably the best weapon in fallout 3 is the "experimental MIRV" which shoots 8 mini nukes at a time, which can do huge amounts of damage. you can get this weapon by getting all the Keller family holo-tapes, and going in the national guard depot.
basically:schematics are instructions (blueprints) for how to create a new weapon from scratch.look in you pipboy and, under notes, it'll show you what you need to build that weapon (eg rocketlauncher or dart gun)then you need to collect those items, go to a workbench, and then create the weapon = WIN
Got milk
yes
The Whipper is the best weapon for Wyplash.
Broken steel is already in the regular fallout3 except for Mothership Zeta, The Pitt, Point lookout, and Operation Anchorage.
There's no such thing as the best weapon. You can only define the best weapon for a already given situation. The best weapon is the one that allow you to utilize your army as a whole. But one weapon is never enough.
the best weapon is a bow and arrow
The best weapon is to cut people
The overall best weapon is the Plasma Cutter. This is the first weapon you will acquire in the game.
for pc, yes. for ps3 and xbox360, no.
There is no best weapon. Every weapon can be used in the best advantage depending on your situation.
the Fmg9 akimbo(costom) is the best secondary weapon to use