They are all different from batch to batch I think we all know that now.
This is all great but when you find a batch that your gun likes, they then change the dies again and the pellet is never to be seen again
Bought six sleeves at the begining of the year of a certain AA die 9 batch after rushing back to Redbecks, unfortunately thats all they had left. Once I had found this nice accurate batch that also flies very flat, Just to throw another spanner in the works I then changed from my MPR to a Steyr as my main HFT gun............but luckily that likes the batch as well.
Also why do your really good pellet batches seem to get used up quicker?