Had been using H1000 with a great load at 3050 FPS....Now I cant Find H1000 anywhere. I have some R26 - but only a half pound and don't want to chase that unicorn again. What other temp stable powders are you all using for this round?

I've been running H4831SC behind the 139 Scenars in a GAP build with a Bartlein 24" barrel. It's a faster burning powder compared to the typical flavors that get discussed with the 6.5 PRC. I'm at 2950 fps and don't feel like it's running hot. My freebore is 0.13" compared to the SAAMI 0.188" which keeps my OAL down near 2.88" and BDL friendly.