From the same store:
https://www.shopdunns.com/products/2322/federal_champion_745_22lr_case/
This is the ammo that shoots well from my 22 rifles and I'd gladly pay the extra .3 cents per round to buy it, if I wanted that much bulk ammo. Point being: Make sure you know what your guns like before buying a few years' supply of stuff they don't.