I am using the 124 gr Hammer hunters in my 6.5 PRC. Developed a load that is shooting awesome. I didn't actually measure my group at 650 yrds, but it is sitting 6" or less. I'm at .306" at 100 yrds.
Shooting on cci 250, N568 in nosler brass. They seem to like a crimp as well, and the groups have tightened up with it.
I have not shot at any game yet, as it is a new bullet for me.
All the reading I have done on them shows they like a faster push, so using the 124 gr lighter bullet, and pushing them to the upper limit of case. I am running a 1-8 twist, so the heavier bullets are rated for faster twist.
Pretty compressed load now at 60.5 grains powder. No chrony, so can't comment on actual speed, but I know they are up there just below max pressure. I know, I know, I need to get one, but other things are more pressing, and when I'm able to shoot tight groups at case max, and under max pressure, is a chrony really going to help me tighten the group up at this point?
Having good results with the Barnes LRX 140 gr in the 7mm-08, so sticking with those for now. Again, no real field experience with them, as they are a new bullet for me here as well.