I had a case of Draxxus that was kept in my garage for over a year.
Went in backyard, threw a ball into the air, it broke on the ground. Repeat twice; they all broke.
Sample balls passed the "blow test" just fine in a 0.693. Definitely expanded a bit. I used a bag of this, however it was for a party and we were using T98 as rentals, but they shot, they worked, and they broke!
Save old paint.
Agg is in aggression.