Originally Posted by Dillonbuck
It was the best seller among a bunch of mildly popular cartridges.
The .30-30 was number one in centerfire rifle ammunition sales until the 1960's when the .30-06 finally dethroned it. Not counting the .223, it's still number 5 in CF rifle ammuntion sales, right behind the .30-06, .308, .270 and .243. I'd say that makes it a bit more than just a best seller among a bunch of mildly popular cartridges.