At one time or another, I have loaded for the following cartridges: .45-70, .348 Winchester, .338 Win Mag, .338-06, .338-06 AI, .33 Mauser(.338x57), 8mm Mauser, .32-20, 7.65x53, .30-06, .308 Win., .30-30, 7mm Remington Mag, .280 Remington, 7mm-08 Rem, 6.5x55, .25-20, .243 Win, .223 Rem, .22 Hornet, .45 Colt, .45 ACP, .38-40, .357 Mag/.38 Special. I think the only one I didn’t load a cast bullet in was the .243 Winchester.
Also, round ball loads for .520(54), .490(50), and .395(40) muzzleloaders.
My very first reloading experience was for the 6.5x54 MS, but it wasn’t my rifle or loading setup. I think I was 14 then.