Yes, at least sort your cases by brand. Also, brand of primer can make a difference. Did an experiment once with my most accurate rifle, a rebarreled Ruger tang safety in 7x57 mauser. Curious about difference a primer would make, I'd loaded at least 4 sets of ammo. Each 3 round set was the same, except for the primer.
Shot them all at same bullseye on a 100 yd target. When finished I'd created basically one hole that was about 1/2" wide and around 2 1/2" long. My mag primer had hit the highest on the target. Each primer set had hit in a different spot.