I personally think most of this comes down to solid mounting in good rings, degreasing threads and thread locking it all down tight.
I have an inexpensive Simmons 3x9 that I bought at walmart 10-13 years ago. Its mounted in weaver grand slam steel rings from walmart also, it was all degreased and thread locker applied. It sits on top of a Savage 110 in .270 Winchester.
That rifle has bounced around in trucks, kubotas, kawasaki mules and such for 4 years going and still puts my handloads into a 1"1/2 at 100 yards.
I have SWFA's on several rifles and they are great but even that Simmons was mounted the same and so were the burris, and bushnell trophy.....and they are all still doing great.
Best
HeavyDove
