Bullet selection with the STW can be tricky. The Hornady 139gr spire point is the most explosive bullet I've ever used (I've loaded some 120 Ballistic Tips up to 3700fps but never tried them on a deer). The 139's always fragment violently out of the STW. They anchor deer DRT, but it's going to leave a mess.
I've drilled at least 20 with the 140 CT ballistic tips as well as the regular 140 and 150 gr Ballistic Tips. I've only had 2 deer in that bunch that weren't DRT when shot in the lung area. The early bullets often didn't go through, but Nosler later strengthened the jacket and I began to see exit wounds with the 140's at 3400fps. Not all of them, but enough to notice. I've never been a "premium" bullet fan as critical tissue disruption is what drops an animal fast and I prefer that.
One thing to take into consideration with the longer bullets and your twist rate is yaw. When I was shooting 160 Partition it took a while for the bullet to stabilize and I found out quickly that most any bullet can fragment if it strikes the animal off-axis. Below is the ENTRANCE hole of a small doe I shot at 20 yards. No exit at 3150fps.
I've not shot a deer yet with the Bergers but it may explain why some people have issues with them and others do not. Could just be the twist rates are differing.
Anyhow, this is a not safe for work/gory shot so don't click on the link if that offends you. I did look for any forum rules against this, but didn't find any. If it's an issue, please let me know and I'll remove it.