Being from Canada, I can tell you its probaly pretty slim that someone else on this board has used that same outfitter. Canada is a big country (bigger then the US).

That being said, a 7mm is an excellant moose cartridge. Their is no need to go to anything bigger. Believe it or not, moose aren't actually as hard to take down as you would think. Most guys believe that elk are harder to kill. Use a well contructed bullet, and you'll have no issue.

Good luck!