Mossberg 500 Shotgun SLUG vs Massive Log

Filthy discharges his load (slug) into massive 30 lb log w/Mossberg 500 12 gauge pump shotgun @20 yards.We chop the log and FIND THE SLUG 6 inches in.(It hit a knot in the wood)-it would have gone deeper..It knocked the log over!! Beer bottle is there to compare the size of the log.