That beats what I'm getting with the same bullets in a 22" .280 Rem. But, I'm not cranking it up all the way.
I believe this was mentioned in the other thread, but it bears repeating: Just because your cases don't show obvious pressure signs, it doesn't necessarily mean that pressure isn't high.
Your velocities indicate, to me anyway, that you're pushing the pressure envelope with those loads. I'd kick it back a grain and see if the accuracy held.
Also, was your 1909 Arg. heat treated before it was re-barreled? Originals tend to be on the soft side, and those hot loads could cause set back issues.
