@bozo699, I've never shot AA1680 but I can get 12 grains of LilGun or TCM in one. I know the K will hold more but every one of my K's starts to show pressure signs anything above 12 in either of those two. Plus I tend to like heavier bullets than typical for the hornet at 52 and 55 grains.
And not to be picky but Duckduckgo calculator says there's 7000 grains in a pound.
1 Pounds = 7000 Grains: 10 Pounds = 69999.96 Grains: 2500 Pounds = 17499989.11 Grains.
I have an ancient sporterized BSA Cadet, a 26" Encore MGM, a Contender 21" factory, and a Contender 16" 12:1 twist SSK. They all shoot well, the Encore feels more like 22LR, and they are all 'fairly easy' to load for now that I have some starting loads to work from. In the beginning I was totally lost and lost a lot of brass trying to fire form for the K's.
I'm seriously thinking about a .17 H hornet, but with supply chain issues that is on the back burner UFN.