Here is what I have, I believe that it fills the gaps, just in my own way. I also have a 270 in there too. I believe the 270 or 30-06 would do in stead of the 260 / 300wsm, but more guns is good.
.22 LR - semi (just more fun that way)
.204 - vamints (could be 223, 22-250, ...)
.260 - deer (or 243, 7-08)
.300wsm - moose, elk, bear (7mag, 300win mag, ...)
50 cal muzzle loader
12 gauge shotgun