After a few months of research I plan on buying a Diana model 48/52 .22 to control a growing ground squirrel problem on my property. Though I have been shooting for many years I am new to the high power springer game and would like suggestions on an appropriate optic. Do I need a specific optic designed for springers? My research so far has been inconclusive...folks seem to be all over the place. I have 4 acres and most of my shots will be between 20-50 yards. My eyesight is not the best so I would like to zoom in on these critters! Budget $200-250 Thank you in advance for any and all advice. It is much appreciated.