For rifle brass, in the main, I am very concerned about number of times reloaded.
I probably own more brass than you.
I shoot most of my rifle brass in matches. I want my brass to be reloaded the same number of times. It might make a difference on target.
But it is hard to know. I can recall sitting outside the huts at Perry when a Highmaster I know came on by. He had been looking for small primer 7mm-08 brass. The stuff was out of production. A mutal Long Range friend had given him about 250 used cases. There was nothing wrong with the cases, but the long range friend had shot the stuff around 25 times and decided that was enough. My HM friend was going to use it till the necks cracked or the primers fell out.
I don't know what the final life story was on that brass.
I load an ammo can at a time. Then shoot the ammunition in matches. I size and prime cases after the match, but don't load again till all cases have been fired.
I keep track by writing Reloaded X times, Sized X times. This dual system of book keeping is needed because I am a dope and have been confused about the number of times I had shot/reloaded/sized some brass lots.
I have only one lot of rifle brass that I fired 22 times in a 308 M1a. After sectioning failed brass that cracks or split necks, I think 22 times is pushing brass life in a rifle.
But for pistol ammo, its different.
Just this weekend I was loading an ammo can of 45LC. Each 50 round box had been loaded and sized 13 times. That ammo can had around 10 boxes, each fired 13 times, which makes abut 6500 rounds fired. The only use for this data is curiosity. And with all the ammo cans I have of 45LC, I can truthfully say I have shot tens of thousands of rounds of 45LC.
Some pistol ammo I keep track, but I am getting to the point where I just shoot the stuff and pour it into the tumbler and reload it. I stopped keeping track of the number of times I have reloaded 38 Spls or 45 ACP's.
My thumler's tumbler is rolling around right now, its belly full of 45 ACP cases.