Sorry to post in here but I wanted to share my experience as well
I've never used 6's until the Longbeards.
I've killed 7 of my last 8 with them without concern .
When I killed the first one last week he stood up as I shot. They punched him down and he didn't twitch but I hit low just above the beard. When I cleaned him it looked exactly like your picture. Just penetrated underneath the hide. A few made it deeper but not many.
I shot the 5's and 4's this week and they hit the same so I used the 5's Friday on one. They wrecked his head. I'm hoping to try the 4's on one to.
The 6's have killed every Tom I've shot but I was a bit concerned at the lack of penetration they displayed.
I love the pattern they throw but I'll probably stay with bigger shot for now just incase I shot low again.
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