I could do OK with the following powders: (1) Bullseye for all small capacity pistol cartridges; #1 pound last for a year of shooting (2) Unique for all pistols plus "reduced" rifle loads (3) H4198 for all "straight walled" rifle cases plus "cast" and reduced loads in all rifle calibers (4) RL15 seems to work extremely well in "metric" cases, as well as all "medium" capacity rifle cartridges (5) IMR4831 for heavy bullets in 30/06 sized cases and many "magnums". While I cannot seem to limit myself to just these 5, I could "get by". I've been looking at all the powders I have in my "storage" closet and was considering "consolidating" my "stash" to a more manageable amount, since there is so much "overlap" in powder burning characteristics. Having said that, while I find the above powers work well with 90% of my needs (I load 23 calibers), they are not the very best for "specific" calibers where Alliant 2400, RL7, H4895, or IMR7828 are "The Best" in my .357Mag, .35Rem, .250Sav, and 7RemMag. BTW, IMR4064 works quite well in .35 Whelen, 9.3X62, 8X57JR, and 30/30. Isn't "capitalism" great where we have such a product selection and a country (right now) where we have the freedom to purchase what is available?