I'm shooting them out of a factory tubed M70 1:9 twist and they stabilize fine. Chrono says they average 2910fps so I'm not all THAT fast and they work great. A word of caution if you handload, these things are CRAZY long. Lots of bearing surface. I worked up to Hornady's book max and will stay there. No pressure signs but they're plenty fast for how slippery they are. I've shot almost a full box (100) and it's promising so far. Averaging .75" at 100 for 5 shots. Reports of on game performance are starting to trickle in and it seems mixed, but I've noticed a lot of the bad reports are from shots at closer ranges, so a bullet as soft as these isn't going to perform well. At extended ranges it seems to be performing well.
