I want a big target for ranges 650-1200 yards, I'm sure pitting wouldn't be an issue. However, I am a little worried that something like a 7 Mag lobbing 197s (Largest round I plan to use) would have enough energy to slowly cup the target. And shooting a pc of steel that is cupped is a bad idea. I guess I could add some bar stock to the back and accept the risk of blowing through the soft spots if I notice a problem.
Any opinions?
