Wait-- You said the 30 cal slugs were found in scar tissue in a bear that was killed by your friend with a 416.
So you're saying the bear was shot with the 30 cal slugs and survived. Not only survived, but the 30 cal slug holes were healed over-- thus the scar tissue.
So how did your friend re-create the shot distance at under 100 yards from the initial 30 cal shooting? How did he find casings from that shooting, and determine they were from the same incident as the 30 cal-healed-over shooting incident?
Or did the bear get shot with the 30 cal, and them immediately come over to your friend to get finished off with the 416? If the later case, then there wouldn't be scar tissue. But, then your friend would know the details of the initial wounding.
If there was, in fact, scar tissue, then the bear healed up, and continued to move around and live it's life, an no one would be able to say what casings were involved. And if your friend found some casings laying around, then it's a pretty big assumption to think that those casings were invloved in the initial wounding of that same bear.
