First stay away from the 50mm. Then i agree with james b's bushnell trophy. I love those. I have had them on rifles up to my .300 win mag, a .338 win mag, and a .50 cal knight rifle. They all stood up to the recoil without a hitch. My theory is this: i could save and buy a really nice high end scope. Then I drop my gun down a mountain. If it's abuse like that, no company, with the exception of Swaravski Optik and thats a maybe, will warranty that. The trophy still has a lifetime warranty against defects. So if I did have a problem, just send it back. (As long as it's not abused) They will take care of it. Plus, the optics really are not bad for the money, and the amber coatings help to enhace light transmission and show brown and grey colours a little brighter.