Try traveling a different route next time. Sounds like you're traveling along a drug corridor. Yep, a white boy traveling alone or what looks alone in a german or other high end built european car will get stopped. And you can thank the lawyers for the ticket. I can and will explain via PM if you want to know more. But, you fit the bill for a drug trafficker to a passing interdiction officer.
As far as the rifle choice; go with SS/synthetic stock version and load a stout 225 grain something or other in it. Wood is nice for heirlooms but you are looking for an effective TOOL. Any gunsmith can install a set of quality irons for $100 or so.
