DB,
I think to a degree it depends where you hunt in Canada. I was in Alberta a couple of weeks a go and it was different than here in BC.
I killed my first deer with a borrowed 303. I don't see the 303 Brit much anymore, it is more like a nostalgia thing I think currently as Ruger is chambering one in their single shot. As others have mentioned 30 to 40 years ago the 303 was very common, nowadays I just don't see them.
Here in Central BC I see a lot of 3006's, quite a few 270's, and quite a few 308's. I would estimate that around here it is probably the 3006 by a nose over the other two. After that and in no particular order 300wm and the 7mmrem.
