I'm not at home to look through all of my stuff.
But, if I was to guess, loading a 175ABLR, which is a pretty long bullet, into a 7mm mag, Retumbo probably isn't a top pick, hence not in the nosler listings, too slow of a burner.
Your probably talking about something in the RL19/22, 7828, 4831, N560/565ish range of powders.