The following list was compiled from various online and print sources, including the major ammo manufacturers' sales lists and the sales of RCBS reloading dies. The various sources tend to parallel each other, with certain exceptions.

The .30-30, which is #3 on some factory loaded cartridge sales lists, slipped to #4 on this "averaged" list because it is less popular with reloaders than the most popular rimless cases (although still in the top 10). The .222 Remington, .30 Carbine and .303 British rank in the top 10 on certain individual lists, but not the others.

Anyway, here are the averaged results based on the data that I could find. Consider it approximate.

1. .223 Remington
2. .30-06 Springfield (first on some lists)
3. .270 Winchester (fourth on some lists)
4. .30-30 Winchester (third on some lists)
5. .308 Winchester
6. .243 Winchester
7. 7mm Remington Magnum
8. .300 Winchester Magnum (.303 British on some lists, .30 Carbine on one list)
9. .22-250 Remington (.222 Remington on one list)
10. .338 Winchester Magnum