I have the pleasure of owning and shooting rifles and pistols in the following slightly obscure caliber. Some of the rifles and pistols I have passed on to other custodians.

22 Jet
22 Super Jet
5.2x52R
250/3000
25/20SS Stevens
25/20 Repeater (25 WCF)
25/25 Stevens
28/30 Stevens
6.5x52R
6.5x54 MS
256 Newton
270 Ren
7 Merrill
7x64
7x65R
280 Ross
295 Rook (300 Rook)
30 Merrill
30 Newton
300 H&H Rim
30/40
310 Cadet
8x72R
8x57R/360
8x57RJ
8x58.5R Sauer
8.15x46.5R
32 WCF
33 WCF
357 Automag
35 Remington
360BPE
9.3x72R
9.3x82R
9.3 JDJ
9.3x74
9.5x56 MS
450/400 BPE
10.5X47R
10.5x65 Collath
11.15x60R
44 WCF
44 Automag
450 3 1/4" BPE
500/450 WR #1
500/450 WR #2
50/90 Sharps
500 3" BPE
577/500 Mag BPE
577 Sinder