I shot the 140 SST out of my 6.5-284 at around 3K. Great accuracy, but terminal performance, at least in my experience, was too erratic for my taste. Sometimes a blow up, sometimes pencling thru. I quit using them because of that.

Am curious about other's experience with them.

I'm shooting the 80 gr. A-Max in my fast twist .22-250. Super accuracy, no dead critters yet.

DF