I have used coppersolids for 10 years. Also have used lightfields, and federals. I have shot maybe 30-40 deer with em. I can't say I have had one go over 50 yards. I did get a poor shot on a sika doe on Monday, and we didn't find her. Now lightfields however I have. But they drop like a hammer after 70 yards.

Bottom line is, if you hit a deer with any slug from a 12ga they measure like 0.6". And penetrating completely thru an animal 0.6" anything will put them down. If you fail to find them or they travel far with any 0.6" anything, you hit them poorly. I myself love the quartering too shot.