I've had some negative experience with them. I shot a doe at 250 yds and she didn't hardly flinch. Shot a second shot and she took off. On the third shot she fell, got up, ran a few feet and posed for shot #4. She went down for good this time. When I gutted her I had hit both lungs with three of the shots. The other had hit the shoulder. It appeared that none of them expanded very much. I only shoot handloads now but some of the guys I hunt with swear by the Hornady 165gr BTSP. The ballistics are almost identical and I've killed alot of deer with that bullet in my loads. Also Federal makes a factory Barnes load which is thr bullet I've been using for three years now and will use from now on. Absolutely devastating. Have a great season.