Anybody else ever feel this way?

[TheBigRedOne]

One thing I've always wondered: Do weapons regain effectiveness when not used for awhile in a scenario? Or once it goes down, it can only stay there or go lower?

Weapons and squads regain effectiveness over time 1) If they stay put and don't fire and 2) Are not fired upon. It is called 'rest and refit' and has been applied to all the games at this point, I believe.

It's the equivalent of heading to the rear to regroup.