Sure , you can make your excellent 30-06 do 95 percent of everything you need. ...........And YES!!! ,Loading todays 30-06 is lightyears ahead of dads old 06 loads from the 50's. The new selection of bullets and powders make that great old classic round into a much more modern round capable of hitting harder at longer ranges. BUT!!! Sometimes getting a new rifle in another caliber has nothing to do with "Need". Sometimes a shooter just wants another rifle , in a new and interesting caliber. This has nothing to do with "Sense," or "Practicality." You just really want one. For me, When I get that urge, I start the cookie jar approach, and also I see if there is rifle I own that I could bring myself to sell, to get the next addition to my safe. Good Luck Buddy