Just tried them today in .25 (been sitting on them for a while)-I was pretty impressed. They shot nearly as tightly as JSB mkI heavies from my RAW at 50 yards (had one flyer). I happened to recover one from below the wood at the target-pretty well preserved. I was surprised at how much it expanded and that I could see the 'triangle' pattern after expansion-pretty cool.
Can't wait to try them in .30 cal when they're available.