Gentlemen we have lost sight of the original question here...........an all around Yukon caliber........NOT a bear defense thread, besides as Bruce mentioned, our bears just aren't all that big, I killed my first 2 with a 7mmRM. I'm sitting here laughing at the 45-70, shotgun and the like suggestions, remembering that 450 mtr shot on my last goat (just happened to be with my 340, now that I think of it) ) and several 400+ mtr shots on some big caribou. The 366 Wagner (9.3X62) certainly has the horsepower for the job, but lacks the legs to be considered a true "all around" cartridge. Even the revered Mr. Wagner takes a 270 when sheep hunting and leaves his 366 at home. Our laws for Bison rule out any calibers below 30, and all case size below '06.........so 30-06 is bare minimum for a Yukon all around rifle. My preferences run from a 300 magnum to the 340 Wby as a true all around rifle and cartridge for all Yukon species at the ranges they may be encountered..........Nothing wrong with the 358 Norma suggestion or the 375s, just not required for our critters, really.
RJ, just to clarify, the 416, was not a joint Taylor/Chatfield venture...........it was exclusively Mr. Taylors baby and hence is named .416 Taylor. The .375 on the same case was a joint venture and hence is called the 375 CT..........
Oh and just as an aside, the Sports Lodge under it's current management is absolutely empty.........no powders for more than 2 years now, no bullets, no brass, unless you shoot a swift, no primers for years, very spotty stock of factory ammo.......Yukon is in the worst shape for a gunshop that it has been in for more than 35 years that I know of. At one point we had 4 well stocked gunshops..........now we have none.