I flip though all my manuals when loading for a cartridge. Then decide where to start and how far I want to go. I have found un reachable limits in a couple cartridges. I know what the max is and if I think I can go more because velocity or other signs, I do it. There are times I stop before getting to max for pressure signs or accuracy is best.

I have had a couple incidents that I am not proud of, but were true mistakes. Nothing that hurt me.

USE YOUR HEAD.

I think a crony of some kind is great.
I also think the better the understanding of reloading, the better off you will be.

A grain or two difference can mean a lot or a little depending on what you are loading for and your components.

Take your time, be careful.

David