What's your least favorite reloading step and what have you done to make it easier or faster?

[popper43]

Chamber checking cast loaded for pistols. Did about 200 this morning, shoulder is tired.

 

[Widow maker 223]

I didn't ever have to worry about that after my wife "found" a live primer that had dropped on the floor which detonated in the vacuum cleaner. Only downside was that I had to do all the cleaning in that room, including vacuuming, for the next 50 years.

I've been waiting for that to happen.