I was too until I figured out just how expensive speed is and how quickly it kills barrels.Yes, from my tiny experience with it, and with the small wound channels I saw, I "felt" the 129 Hornady was very tough. I'm sure if I had used the 120NBT or even the 125NPT my results would have been different. I was shooting them mid lung/tight behind the shoulder. I was only about 75yds from each. I had my heart set on playing with the 6.5/284 so I just "had" to go that route, ha. Years later I was going to try the 260AI but a couple of surgeries slowed me down...I bet it would have been sweet too! The wind is my Nemesis so I like speed to hedge my bet out in the prairies. I suppose I'm just a speed freak at heart, though I like to play on the other end of the field too, i.e. heavy for caliber, Old School loads in the Mediums. The bullet and placement...can't get away from either! ha
I've loaded SMK's hot enough in the Swift to watch them self destruct before hitting a hundred yard target. Years ago we did the same with the .17 Rem and 7mm RM.
I purposely shoot very tough bullets today that open consistently and I'll shoot more for the neck or spine/shoulder junction.
Frangibles and bullets that fail to open at all with both get you into trouble especially on lung shots so I don't shoot them at all anymore given a choice.
As long as I can keep getting the Peregrines and Interbonds I see no need to ever change again.