22 250 Remington
Not without endangering yourself and anyone else in the area. Stay with ammunition designed for the firearm you are shooting.
It's safe as long as it is safely contained in a gun safe, the ammunition is secured separately and for a further security measure the bolt is removed and stored separately, the rifle is as secure as a lump of wood. To add to this, a trigger lock can also be attached. Nothing else can be as safe - not even the nuclear launch codes!
All else being equal, no
the species you will be hunting
Yes. I own the rifle myself, buy .36g BBs, or else the power of the rifle will send the BB flying in the wrong direction.
They should be locked away in a secure metal cupboard, and the ammunition should be securely stored somewhere else.
Yes
Rifles are made of steel, aluminum, wood, brass, plastics, fiberglass.
for monsters the helsing for anything else pistol or assault rifle
let someone else do it.
18, the same as it is everywhere else in the US under federal law.
Like anything else it depends on the brand, the model and the condition of the rifle. Is it still working. Is it in Poor, Fair, Good, Very good or Excellent condition