Like the scope, but had problems. - Konus KonusPro 6-24x44mm Rifle Scope

I liked this scope. But on my first attempt to zero, the dial for left and right broke off in my hands. I contacted the company, had it shipped back my expense, they fixed it and shipped back with extra button also. Went back to range to zero, after 15 rounds the cross hairs turned inside the scope. Am sending back again at my expense. It says up to 12 ga. It is on a .50 Beowulf. I guess will have to put in a .22 when returns.