I have the Bushnell Banner Dusk & Dawn 4-12x40mm sitting on a Tech Force 99 .22 "Magnum," (again). I had taken it off and slapped it on a Ruger 10/22 to verify it's accuracy, but decided to go back to using it on an Air Rifle. Straight Shooters has a list of airgun-rated scopes on it (admittedly pricey), might also try The Optic Zone and see what they have. As you know, they should be "airgun-rated" for the springers. Try what I refer to as the "online Marts" - CTD, Natchez, Midway, Grafs, Cabelas, etc. Compesseco has the "Tech Force" line of scopes too. Try PyramidAir too.