Not only PV, but MS, Natch, ect. You can have the powder in your cart and by the time you enter all the cc stuff, it's gone. I think the fair thing to do is once items are in the cart, that's it. No taking it out and selling to another. Allow 5-10 minutes to check out and be done with it. It's not like they aren't going to sell it in todays market. I learned the hard way with PV and that stupid timer they have telling you how much time you have to check out......Don't believe it, as it will screw you every time. Bots make it really tough these days.Not everyone can, but if you watch Powder Valley closely...and I won't admit how often I do some days....they actually get most of these in stock here and there. I've seen H4895 in stock several times recently, I got some H4831 a few weeks back. H4350 was actually in stock for awhile today, as was H1000 and Retumbo shockingly enough. I just couldn't get in fast enough to get in on H1000, I still don't understand how their stocking works, seems like lots were being up throughout the day then selling out again. Over the past couple months I'd restocked almost all my core powders there.
The rarest are the Alliant powders. I don't think they are releasing much at all to the reloader market. I've seem a couple on Powder Valley ONCE this year, and they were gone as fast as they appeared.
Though not known for temperature stability, I've had good luck with W748 in 308 Win and 760 in 6.5CM. They are both readily available. Primers seem to be the real limiting component these days. Especially for LR and Magnum.