My favorites aren't that simple.
Cowboy Action
38spec. both revolver and Rifle is what I use but 38/40 is what I like.
45/70, 45/90, 50/70, 50/110, 38/55 are all favorites depending on what I want to accomplish and the circumstances.
Carry or defensive use (antipersonnel)
45acp, 40 s&w, 9mm, caliber shrinks as the platform shrinks
Hunting revolvers
357, 41mag, 45lc, .475 Linebaugh
Hunting Autos
.22
Hunting revolvers dangerous game
.475 Linbaugh, 454
Play Rifles
.22, 5.56, 25/06, 30/06, 338 Lapua, 338mag, 416, 458 and 475 NE
Hunting Rifles
22, 25/06, 7mm mag, 338, 458 and 475NE
Hunting Dangerous game
338, 458, 475NE
Shotguns
12ga. 10ga
Guess that sums it up I shoot others but these are special depending on what I want to do.