Based on all the replies, 90% of what I load and shoot is offbeat...
25 Remington
30 Remington
35 WSL
351 WSL
8X56 Kropatschek
10.4 Swiss
8X56R Mannlicher
8X50R Mannlicher
38/200 (38S&W for Brit revolvers)
10.4 Glisenti
400 Corbon
577 Snider
577/450 Martini
and others I don't consider offbeat...6 5x55, 7.62x54, 8x57, 257 Roberts, 375 Winchester, 32/40, 38/40. Sure there are more.