I'd buy a 30-06 and load it with 200-220 gr bullets and call it good. I tried 35 Whelen and 338-06. The only thing they do that 30-06 doesn't do is kick harder.
But if you're like most people you just have to find out for yourself.
Most people don't really want the truth.
They just want constant reassurance that what they believe is the truth.
