Thread: What to make of weird chrony data?

I'd be a bit dubious about your first three rounds, seems a little bit too consistent, could be the crono only registered the fist round... Just a thought. There's some serious spread in the last load, it could of course be dodgy crono readings but something else to have a look at is consistent neck tension on your reloads, I've found a looser neck will give dramatically slower velocity.
Just another something to consider.