Just for kicks, last night I weighed the (7) .277 140 AB's that I have recovered from critters since I started using them in 2006. The average percent retained weight for those 7 bullets was 71%. This is from right around 24-26 animals killed over that time using the 140 AB. Mostly deer and elk. The majority exited, but probably one or two more were lost in animals.
When I first switched to the 140 AB, I did some dry newsprint bullet testing that JB (Muledeer)suggests is much like hitting heavy bone on an animal. Of the 8 bullets shot into dry newsprint at 50 yards, those bullets retained 63% of their original weight. Like MD mentioned on here a time or two, dry newsprint is often tougher on bullets than the real deal.
