I have reloaded my old mixed bag of 44 magnum brass, once fired factory ammo, several times. I have twenty of this thirty of that and some more of the other. I've been keeping it segregated by headstamp but have not seen any noticeable differences.

Well, it's kind of a pain keeping that brass seperate and I have 500 rounds of brand new Winchester brass. Figure I may as well use it as trip over in the floor of my closet.

The question is: would you load it all once (not at one time)and then start over or would you use 100 at a time until you felt you needed to retire it?

I probably will never load more than 50 rounds at one sitting.

Sorry for the weird question, I'm a bean counter, can't help it.

I'm in the same boat as you with the 44 mag. Got lots of brass and shoot it a lot.

If your not pushing ultra hot loads just load it all togather and shoot it til the cases start splitting. That's what usually kills pistol brass.

I never trim it, just put it in the tumbler after dropping the primers. Some of my brass has 20 plus reloads on it.

I'm shooting a hard cast lead bullet at between 1250 fps, in the 5.5 inch redhawk to 1350 fps in the 7.5 inch Super Redhawk. Nice load, death on deer, accurate as I can shoot.

. . . I have 500 rounds of brand new Winchester brass. The question is: would you load it all once (not at one time)and then start over or would you use 100 at a time until you felt you needed to retire it?
I probably will never load more than 50 rounds at one sitting.
it.
I think it's kind of nice to have some new, unfired brass around so I would load a portion of it and keep the rest on hand as reserve. My loading schedule is to load enough of any caliber to last three sessions at the range. In my case, that would be 300 rounds for each handgun and 120/150 rounds for each rifle. I use once-fired, range pick-ups to replace any splits and discard brass after 20 reloads. I keep a load data label with each box of cartridges to track components and load dates. Depending on what I have on hand, I may use range pick-ups to start a fresh box so my unfired brass depletes very slowly. Having 500 rounds of new brass in the closet isn't a lot, in my closet the count is in the thousands. ;)