Hi, Just wanting to control the Sparrow population around my Purple Martin colony and was recomended to get a Bejamin Marauder. Looking at shots of 30 to 40 yards maximum. I think I have the airgun picked out, (synthetic stock, 22cal, Lothar Walther/Picatinny rail.) Any recomendations on Scopes for this distance, and was looking at Rov Air compressor, but all seem to be out of stock. Probably will be using a shooting bench, as in my experience, that limits most human error. lol. Looking for accuracy so not to hit vinyl fence/ bird house. Thanks in advance for any and all comments.