7 mag is a brutal round on cheap scopes, not saying your is cheap just saying it will tear up a scope not built to handle the recoil. I have a remmington 700 bdl in 7 mag that I have gone through 3 scopes 2 of the scopes worked for about half a dozen or so shots then they became unusable. I would have to rezero and then they would be off again. messed up the scoped inside. last one did it in the middle of deer season. bad timeing. so if you are going to stick with 7mag do yourself a favor. spend a little extra and buy a good quality scope. I finnaly broke down and bought a luepold. also check your scope mounts I have had mine work loose after a long hunting season.
Good advise I bought a shooters friend recoil pad for me wish they made one for a scope lol