Never is a long time. Occationally I would buy factory stuff for my handguns, but very rarely (I bought a box of Blazer Brass in 45 ACP about 6 years ago when I got a new 1911). I bought a box of 38 Specials when I got my wife a new 2" .38 mebbe 5 years ago, but other than that, nuttin except 7.62x39 stuff for my SKS.
FWIW, I reload for my 5, .44 Magnums, 3, .38 Specials, 1, .357 Mag., ,2 9mm, 2, 45 ACP, 2, .223, and one 30-30. Been a few years since I reloaded anything else, I just settled on these.