Thread: Mixing powder batches

The end of a powder bottle is a bit of a pain.
Inevitably it is just out of sync with each bullet batch and each primer batch too.

I try to use up all of one batch until there's less than one cartridge load left, then move to the new bottle and mark the projectiles with felt pen, then try and shoot them off together. I count on the different batches being very similar but like to re sight in pretty soon after changing each batch of any component. Not OCD about it though. In theory different batches could give enough difference in velocity to affect long range (600+yd) trajectory for F class or TR shooting like cyclops is talking about, but for hunting it would be more a matter of harmonics and a zero change from that.

I try to buy powder in at least 1kg at a time to minimise this problem.
Why did you buy more and start more before you'd finished the last batch ?