Originally Posted by Lefty7mmstw
If you throw in h4895 with it's 100 fps swings in my 25wssm between 20 degrees f and 90 degrees f and you've got a different ballgame. I put NO stock in the hodgdon temp. stability; I've seen otherwise with the few I do use. I'll play with Retumbo soon in a couple of my rifles and I do expect at least slightly better results as it isn't a revision of an older powder like some of the older Hodgdon flavors.
You don't know what you are talking about. The following Hodgdon powders are made by ADI in Australia with special technology not well known to others. Temperature information comes from ADI not Hodgdon .
So they all have the same technology as Varget .
Wether any figure is correct or not these powders are proven to have less temp sensitivity than others on the market .