I had a weird problem last year while hunting in a shotgun only area. I'm shooting a mossburg 500trophy slugster. It has the rifled, ported barrel and a scope on the cantilever scope mount. I'm sighted in about2" high at 50 yards and they are about dead on at 100 yards. I always use 2 3/4 lightfield sabot's and have alway's been pleased with their performance. Now to the problem. I shotat a doe last year off a steady rest, the doe was at 97 yards. My first shot missed, I couldn't believe it and took a second shot and the deer dropped.When I looked at the deer I saw that I hit it in the top of the skull. The deer was looking at me over it's shoulder so my left to right seemed great but obviously the slug hit about 16-18 inches high. I went home and tried shooting off a good rest and sure enough I'm hitting high over a foot. I tried it at 50 yards and I'm 1 3/4 to 2 inches high. Itried a few regular rifled slugs at 100 and they dropped about 8 inches and were dead on at 50. What on earth could cause the slugs to rise?I'm going to try several other brands this yearto see what happens. The incident last year has puzzled me ever since.