While I hunt with a few "bread & butter" cartridges (.243, .25-06, .260, 7mm/08, .240 & .270 Weatherbys, 7.62x39 (CZ), .35 Rem, .44 Mag), most everything else I hunt with is either retro or semi-obsolete. My buddies love to razz me and say stuff like "He won't own anything that you can buy ammo for at Wal-Mart." I'm just bored to death with "common" cartridges.

.221 Fireball
.222 Rem Mag
.225 Win
6mm Rem
.25/20 Win
.256 Win Mag (handgun)
.25/35 Win
.250 Sav
.257 Roberts
6.5mm Rem Mag
.264 Win Mag
7mm BR Rem (handgun)
7-30 Waters
.284 Win
7x61 Sharpe & Hart
7x64
.303 Sav
.300 Sav
.307 Win
.30/40 Krag
7.5x55 Swiss
.300 H&H Mag
.308 Norma Mag
.303 British
.32 Win Spl
.32-40 Win
8x57
8mm Rem Mag
.338-06
.348 Win
.351 Win SL
.357 Rem Max
.356 Win
.358 Win
.350 Rem Mag
.35 Whelen
.358 Norma Mag
9.3x62
9.3x64
9.3x74R
.38/55 Win
.375 Win
.401 Win SL
.41 Mag
.44/40 Win
.45 Win Mag (handgun)
.45/70

Also have a couple odd-ball wildcats; .375/06 JDJ & .411 KDF Mag