Numero Uno is your friend http://www.classicsportingarms.com/ruger-no-1-rarity-tables/ruger-no-1-caliber-list-and-production-data/
This is intended to be a complete caliber list of all Ruger No. 1's that were commercially produced. It does not include the "one of a kind" chamberings that have been made.
204 Ruger, 218 Bee, 22 Hornet, 222 Rem, 223, 22 PPC, 22-250 Rem, 220 Swift, 6mm PPC, 6mm Rem, 243 Win, 250 Savage, 257 Roberts, 25/06, 257 Weatherby, 6.5 Creedmoor, 6.5×55, 6.5 Rem Mag, 6.5-284 Norma, 264 Win Mag, 270 Win, 270 Weatherby, .275 Rigby, 280 Rem, 280 Ackley Improved, 284 Win, 7×57, 7mm Rem Mag, 7mm STW, 7mm/08, 30-06, 30/30, 30-40 Krag, 300 RCM, 300 H&H, 300 Weatherby, 300 Win Mag, 308 Win, 7.62×39, 303 British, 338 RCM, 338 Federal, 338 Win Mag, 35 Whelen, 357 Mag, 9.3×62, 9.3x74R, 375 H&H, 375 Ruger, 38-55 Win, 404 Jeffrey, 405 Win, 450/400 Nitro Express 3", 416 Ruger, 416 Rem Mag, 416 Rigby, .44 Rem. Mag., 460 S&W, 45-70 Govt, 450 Bushmaster, 450 Marlin. 450 Nitro Express 3 1/4", 458 Win Mag, 458 Lott, 475 Linebaugh, 475 Turnbull