I've taken whitetail deer with the .264 WM and 6.5 WSM, plus mule deer and antelope in addition to whitetails with a 6.5 SAUM. I used the 129 gr SST once about 15 years ago and thought it opened up too violently. I used the 140 gr Sierra SBT a couple of times and found it adequate. I've taken the most game with the 130 gr JLK VLD (the older iteration made by Swampy before he passed away). It has performed very well on chest shots, almost always resulting in lots of internal damage and a golf ball sized exit. I plan on trying Hammer bullets, as I used a 90 gr Absolute Hammer this year from my .257 Wby and it performed flawlessly on a quartering away shot, taking out 3 ribs going in, shredding one lung and the heart, and exiting the front of the far shoulder. It was about a 60 yard shot with a starting velocity of 3800 fps.
