mdwest
AH ambassador
.308 and .30-06 seem to be the popular choices today. I like that they are not overkill for small whitetails but not underkill for elk/bear at long range, and that ammunition is easily accessible.
I agree on the middle road theory, nothing too extreme on either end. What would cause you to choose a bolt action over, say, a lever action?
I love lever guns...
But if I were looking at a 1 gun battery for everything, a lever action wouldnt be my first choice..
lever guns are generally not as accurate as bolt guns.. for the 250 yard shots on deer sized game you mentioned in the OP, a decent bolt gun wins hands down (IMO)..
lever guns are also more prone to breakage.. they are far more complicated, have more moving parts etc... if you are working a 1 gun battery, you have no back up.. if your gun goes down, you are without a gun until you figure out how to fix it..
You also have FAR more options if you are talking 308 or 30-06 (or 7x57, 6.5 creed, 270, etc..etc..) to look at for a bolt gun.. very few lever guns are box fed and capable of firing the calibers you have been recommended..
Any standard long action (and in some cases a short action) bolt gun you will be able to find chambered in any, and possibly all of those calibers.. you'll find options at just about every price point from a couple of hundred bucks to several thousand dollars..
In lever actions you are going to have far fewer options to consider.. (again, this is taking into consideration your 1 gun battery requirement... if I could have 10 guns I might throw a nice browning BLR in 308 in the mix.. but knowing I get only one boomstick that has to cover me for all contingencies.. for me at least, it doesnt even make the top 25 rifles for consideration..).. .