I bought a Ruger M-77 Ultra-light in 257 Roberts and I want a lightweight scope for it. I have about $250.00 to play with. I'm thinking a 3x9x40 would be the most practical, but has anyone out there got any other recommendations. I mostly hunt in the woods and edge of fields, 99% of all my shots are under 100 yards. PS, Will be used for whitetails and coyotes, occasionally groundhogs.