Originally Posted by WildRose
Sorry Bob but that's what happens when you put a cheap scope on a heavy magnum.
The only possibility besides loose scope mounts/rings is she's busted.
You really don't want to waste money on anything lower end than a Viper PST or Leupold VXIII with magnums or sooner (usually sooner) or later things will come apart on you.
The new series buckmaster is trash IMO compared to the older ones. I've had a 6-18x40 buckmaster (older front focus series) on my 300 rum the whole time I've had it, and the riflescope was on my 7rum the whole time I had that rifle. It's taken 1,000+ recoil cycles from rum's and she's holding 1/2 moa groups with the current rifle. Neither rifle had a brake either. I wouldn't put the current series on much of a rifle though.
The only two scopes I've had go to hell were a vxII leopold 2-7 and an older elite 3000 3-9 that had been on at least 5 rifles and got torn up by my lightweight 375 h@h. I've currently got an older Nicon Monarch straight 6x ot it; been trying to kill that scope for a while-- won't die. The Leopold was tightened up by them and worked well until I sold it; the elite was replaced with a new scope for free.