RE: Which BIG THUMP caliber?
Get the 416 Rem Mag and don't look back.I bought my first one about 8 years ago.I have never been to Africa,haven't even been after Grizzly bears.
BUT!!!!
I have had fun shooting chuck's,yotie's,deer and antelope with it.I can tell you too if you ever get caught by suprises Ice bergs,it's a great Ice breaker.
BBJ