I would say the Ruger stainless boat paddle with open sights would be a great choice, top it with a quality fixed 4x scope, maybe a Leupold or a Japanese Weaver.
A more traditional choice would be a Mauser, the old FN's were great, again open sights and a quick detach scope mount.
A properly modified M98 with a fiberglass stock would be a excellent choice.
30-06, 35 Whelen, 338-06, 9.3x62 would be top choices for chamberings, an advantage they have over magnums is magazine capacity. An extra round on board is an advantage.
