So i picked up a Savage 110 last year that has a Tasco World Class 3.5-12x50 on it. My dad loves tasco and frankly it seems like a pretty nice scope. My problem tho is that i have to hit the stock in the exact perfect spot (slightly forward from where it feels natural) to get a good picture in the lens. If im to far back or forward it gets slightly obscured by blackness. Sorry if i sound ignorant but I really dont know technical terms lol. The scope is set in offset rings to that its moved back an extra half inch and I have the scope moved as far back in the rings as i can. It just seems like there should be a little more tolerance than a quarter inch window that gives you a decent picture. Thanks for the help!