I've never yet mixed brass brands when reloading for a specific cartridge BUT...with suplies getting scarcer...I was wondering at what point accuracy is going to breakdown and the effects of using Brand X,Y,Z brass will start to show? I'm guessing scrambling brands would fly in the face of consistancy. Would I be signifigantly better off reloading say 40 rounds of a chosen brand, then 40 more 2nd firing, 40 more 3rd and so on, rather than reloading a big batch of mixed brand brass all other variables being equal? If there is a difference could one chronograph each brand of brass, tune the powder charge thus equalizing the muzzle velocity, getting all the brass on the same page? If anyone has any thoughts on the subject it might save me a buck or maybe put my foolish notions to rest. Thanks.