It'll work just fine.
You will usually find this range of scope on a centre fire rifle. As to what specific calibre of rifle, you can't pin point it. This is a pretty all-around scope that is good for varmit hunting, deer hunting and even big game hunting.
Do a search for High Standard A1041 rifle parts. Numrich gun parts has a good selection of parts for this rifle.
Most of the major makers have one or more.
You must contact Bushnell to find out.
150 or so
No, it's a subcalibre rimfire rifle.
Contact Bushnell
The original was in caiber .44 Henry rimfire. Currently in caliber .22 rimfire. Which one?
If you look at the bolt face, a center fire rifle will have the firing pin located in the center of the bolt. A rimfire rifle will have the firing pin located on the outside edge of the bolt.
Bushnell is a well-known manufacturer of hunting and outdoor equipment. Bushnell Elite is Bushnell's line of optical equipment, and includes rifle scopes and binoculars.
Marlin
Yes