One thing my grandpa related but I failed to grasp until I started reloading.
"Do one thing at a sitting and when you get ready to move on to something else, put everything away and take a walk, then come back and start with your new project, youll keep more fingers and eyebrows that way"
(paw was a farmer and community "stump blaster" ergo, he used "deeniemyte" to get stubborn stumps out of neighbors fields.. he also once said "theres a few things you only do once, and a few more you should ever do" as he showed me the scar he got from hitting a blasting cap with a hammer to seat it on the fuse)
Long story short, if youre loading and want to switch calibers, put everything away, go get a cuppa joe, then start over, it ensures youre not using 30-06 reloading data in a 30-30