Be careful trying to fill in the gaps. Your sickness will begin to grow until you end up with so many guns you can't decide which one to hunt with. I've been filling the gap for years now and I have spent a lot of dough. I've learned a lot and found that some guns no matter how cool they seem aren't worth the extra cost of the good ol' faithful.
Here's what I've settled on for hunting guns.
22LR No more 17's
.223
22.250
.243
.270
30.06
300RUM
50 CAL black powder
Various Shotguns
Edit-I could do it all with a 22LR and a 30.06!
