.22lr
220 swift
.243win
6.5x.284
.270wm
30-06
.338wm
.358win
45-70
.416 rigby
.50 bmg

Thats my list!!

My fave 20 actually go like this;

.30-06
.30-30
.300 Savage
.308 Win.
.270 Win.

.22-250
.25-06
.243
.223
.35 Whelen

.375 H&H
.458 Win mag.
.348 Win
32 Special
.25-35

.470 Nitro
.416 Rigby
.280 Rem
7mm-08
.450 Marlin

honorable mention to the 22 LR

The ones w/ stars are ones Ive actually owned, the rest I just think are cool.

22lr*
22hornet
223*
243
6.5x55swede
7mm-08*
7mmRM*
30-30*
300savage
308win*
30-06*
32 win spl*
338fed
357mag*
35rem*
358win
35whelen
44mag*
45-70
50beowulf

You cant have half the -06 family and not the most famous one.....

Top 20?

.22LR
.223
.270
.308
.338WM
.40S&W
.45acp
.380acp
20 GA
12 GA

The other 10 would have to be guns I decide to get and would probably include:
.243
6mm
25-06
45-70
.378
.416
.17
.204
?
?