OP, there is a very good reason to stock up on certain components. The drought we are in now, is nothing new. It seems to happen just before every US election and if the Democrats win, it will continue until they are out of office or lose control in the Senate or House of Representatives.
Now, the main reason for stocking up is very plain and simple. When you buy your components in bulk and make sure they are all from the same production lot, you end up with what should be very consistent quality ammo. I have been in the position on more than one occasion where there was a component lot# change and a whole new load had to be worked up. Usually happened when time was a big issue.
If your money is tight, this may or may not be an open option for you.
If I have a batch of bullets/powder/primers that just don't want to come together, I sell it, usually at a loss. I got the accuracy bug a long time ago and it bit deep, infecting me with the irrational desire to create groups that look like one bullet diameter. Never going to happen but it's a fun addiction, even if it is hard on the pocket book.
I had a fellow that came to me last fall and asked me to LOAN him a half a pound of powder, 50 primers and 50 .308 x 165 gr soft point bullets. He commented that he would pick up a pound of powder/couple of boxes of primers and a box of bullets. When he got them, he wanted to return whatever components he hadn't loaded and top it up with stuff he was going to purchase. I told him to forget that noise right off the get go. I would sell him a pound of powder/primers/bullets in full boxes and they would be his for ever and ever and I didn't want to see them again. He declined, he couldn't afford it. I bought his rifle two weeks ago.
From the sounds of your post, you don't seem to have a cash crunch but may be a tad tight with your money. In a case like this, being tight or careful as some put it, it plays against what you're wanting to do.
Buy as much as you think it will take to shoot out your bore on a target style rifle. It will be much cheaper in the long run and you won't have to spend time and money searching for components. If you have to drive a hundred kliks to pick up a pound of powder, box of primers and box of bullets, that is very expensive shooting.
As far as hoarding goes. Some people shoot a lot. I've seen two M305 Norcs in the past month with about 12cm of throat erosion and about 50% of the rifling left. Both these guys shot over 15,000 rounds of Norc ammo in each of those rifles last year. They have lots of money and both have wives that like to shoot. They bought the 30,000 rounds between them and got it for extremely reasonable prices.
Lots of reason to stay "stocked up", you snooze, you lose.
Look up Higginson's Ammo Mart. You will have to pay shipping but likely that will be about the same or less than driving around looking for components. They will give you a good discount for bulk orders as well.