What is everyone using for base rings on the bigger 338+ rifles, and have you had any problems with it? I have a light weight hunting setup without a brake and after switching scopes had issues with the rings coming loose from my bases. I was shooting a max load of 250gr bullets and my weaver tactical rings came loose from the bases, I original installed with clear nail polish. I took it home and over tightened them slightly with lock-tight. I have an identical setup on a 270 that has been trouble free. If the problem continues I will have to switch to another setup. Has anyone tried a picatinny rail and switching scopes between rifles? I have given it a little thought but wanted to see if it works well for others.