Hugh, my name is***** am only a hobbyist photographer who works part time in a photography shop, I do have 30+ years of experience. I have to disagree with Brian's assessment. The FG camera uses type AI lenses (manual focus lenses with Aperture Indexing levers). These can be used on any D-SLR with few exceptions. In general, the higher end D-SLR's (such as the D5, D4(S), D3X, D3, D810(A), D800(E), D750, D700, D610, D600, D500, D300S, D300, D200, D2 and D1- series cameras) can meter with these lenses, but when used on the consumer cameras ( D5300, D5200, D5100, D5000, D3300, D3200, D3100, D3000, D80, D70, D60, D40, and D40X) the user will need to determine and set the exposure manually.
I am unable to verify at this time the type of lenses used by the Nikon 2000 series camera, but if it is indeed an AI lens like that on the FG, then yes, it can be used on the D3300, but again, you'll need to determine and set exposure manually.
You can read more about Nikon lens compatibility here: