I posted a good bit about the reported increase in sales, which has been confirmed anecdotally by others. The main issue is you have not been able to buy ammunition since . . . April? I don’t mean zero - but it’s all out of stock/backordered, and if you know someone at a local store that will set some aside for you, you’re talking about 1-2 boxes. Reloading supplies are the same.
Since there isn’t a federal or even state tracker of gun and ammunition sales available, you’re not going to get statistics generally - the statistics showing the increase in gun sales came from interpreting self-reported feedback from national gun shop reporting as well as a massive increase in background checks for handgun purchases.
Is a link to an article I posted back from July. Feel free to check out the thread - What sort of things make gun sales go DOWN? and any of the others like it. 