Who are you hunting with in BC? I regularly go to BC for spring black bear have seen literally hundreds of Grizzly over the past 20 years there. I personally know two of the top stone sheep guides in BC. I generally hunt the same place/guide for the last 10+ years. I know you said the guide your going with doesnt carry a rifle so I know it isnt the two guides I know. One of them carries a lever 375 Win all the time and the other a 45/70 guide gun.
An earlier post said guides live there 4 month or so and know about all the bears and that is completely true. The two guides I know that is the source of 90% of their annual income. They guide spring black bear as well but that is pennies on the dollar compared to stone sheep hunts.
Ive shot lots of black bears and used several different calibers but I still always go on the premise of what if I run into a Grizz with a bad attitude. I would start my rifle selection for your hunt on something 30cal or better. Definitely on the lighter side for sure. Sheep are not hard to kill at all but big bears are especially in a scenario we all hope to never encounter. I have a hi-tek custom 340 WTBY that shoots 212gr hammers into little tiny groups it weighs just under 8 1/2 lbs ready to hunt. That would be my choice if I was to ever go on a stone sheep hunt.
I would pack ammo as well as mail up same ammo a few months ahead.
Air Canada as of a few years ago will charge you extra for a rifle case and also I freeze my meat and bring it home on plane and they charged me 150 (US) for my gun each way and same for each cooler box on the way home. Just FYI.
I know you have a lot of money invested in this hunt, dont let the bears deter you in any way you will likely see them but for as many times as I have been around them we never had a issue (knocking on wood here). A little prep and planning like you are doing now will ease your mind and improve your overall trip.
Have fun and shoot a whopper. I look forward to seeing a post all about your success on the hunt...
You've been there and done that a ton load over the last 2 decades that's pretty darn cool. Question for you if you don't mind, but how many times have you fired your rifle in defense at close range on bears that were set on doing you harm?
Many thanks