I am sensing something that I was thinking when I started reloading.
I wanted to have a few powders on my reloading bench as possible to allow my to buy in bulk and minimize possible mix ups.
After reloading for 32 ACP, 38 Special, 357 Magnum, 9mm, 45 Long Colt, 7.62x39, 30-30, 30-06, 7.62x54R Russian, and 7.7x58 Japanese, plus gas checked reduced load cast lead bullet rifle loads; I usually only have three powders on my bench.
H-4895 --great for most rifle loads and reduced cast bullet rifle loads
Alliant 2400 - magnum pistol and reduced cast bullet rifle loads
One of the following pistol powders: Hodgdon Universal, H-TiteGroup, or W231, with Titegroup being my favorite