A different scope or mounts won't solve the real problem, blow back.
Some guns just have a bunch of blow back and there really isn't anything you can do about it other than protect the scope from it. I use electrical tape on the scope area that gets hit. I replace it as required. It is not pretty but it does save the scope from cosmetic problems.
The only other option is to get a gun that doesn't have the blow back issues. I have always liked this option the best for me:smiley_clap: