The best load that I have had for my 270wsm has been with Retumbo. I've worked up a decent load with H1000 but the Retumbo load did a little better. Well I've got it on my wishlist at a couple of places, I'll just have to jump when they say jump!!
A while back I received an email from Powder Valley that said Retumbo was going to be unavailable for the forseable future so they were clearing backorders for Retumbo.
The end of May I saw a Gunbroker auction that had a 1 pound bottle of Retumbo going for $125. That was the highest bid as the auction was coming to an end.
The word was, several months ago, that Retumbo would be back on shelves in July (2020 ? Although not specified). I guess they still have half the month left to make it happen. We shall see.