I have killed 2 deer with 245 hollow point powerbelts and one deer with the 260gr powerbelts that were marketed by knight for awhile. 2 of the deer were dropped almost instantly. The only one that didnt drop was one that was my fault by taking a marginal shot. At 145 yards the bullet hit a quartering away deer and traveled diagonally thru him and stopped in the deers chest after hitting the opposite side front quarter.The bullet was mushroomed nicely with 170 gr intact from a 245.I know thats a pretty big loss of weight but the damage in the bullet path was pretty devastating. I seldom hear too much good here about powerbelts but some how the few deer I've shot went down quick.I bought some 300gr noslers and crush ribs to shoot in my mk85 but couldnt get them to group too well. I may try another sabot other then a crush rib.