That is a great link Bonehead, thanks. Regarding confirmed Sasquatch kills, it's unlikely we would ever hear of them unless unequivocal evidence remained.
As far as the "torn up camp" incident, if memory serves there was an empty booze bottle in the video. I recall three times when boozed up campers began hootin', hollerin' and shootin' during the night; one instance was in a remote area in Montana's northern Bitterroot range near the Idaho border, one was in a National Forest campground at Seeley Lake, Montana and one was in a commercial RV campground at Kettle Falls, Washington. Fortunately, none of those incidents resulted in any injuries.
It's not a stretch for me to envision a similar situation in the case Bob Garrett recorded. Campers get lit, maybe hear or see something that startles or scares them and pop a cap or two or more in that direction and hit something that takes exception to being shot. Another possibility, campers get lit and pop some caps into the woods just for drill and hit, scare, irritate (take your pick) something that reacts violently. If a revolver(s) were the tool of choice there wouldn't even be any cartridge cases for evidence if the shooter(s) didn't have time for a reload.
I haven't made up my mind on this one by any means, but there are certainly possible scenarios that could involve a Sasquatch of normally peaceful disposition reacting to seemingly outrageous provocation in his own backyard.