I don't shoot much through mine, not as much as some here do.
I have a couple of cases of Eley, that I strictly use for hunting and 3 bricks of Hornady.
That pushes me just north of 5k. I have not bought much HM2, the past couple of years, too busy stacking 22LR.
IF I am being honest, the past two years, I have probably shot 2 boxes. A good cleaning and than seasoning shots, followed by a couple dozen squirrels meeting untimely downfalls.
With 4k of Eley, I feel like my hunting needs will be fulfilled for my lifetime. The Hornady I shoot is not too shabby either, but I use for plinking more than anything.
I think if you keep 5k on hand, than you are probably in good shape. I know a couple here, burn up a good bit every year, shooting sage rats, out West. I think those guys should probably get closer 7.5k
That is a bunch of ammo, I know. But if you go back to 2013 and read this sub forum. They literally went over two years, with out production of HM2.
When price stabilize again, I will probably get 3 or 4 more bricks. If Eley were to start producing them again....pffft. I would mortgage the house