Re: spilled powder on carpet
I've used a little hand vac -- you know, the black & decker, battery operated kind.
If there's a significant amount of powder, it's easy to empty the vac several times during the process. I've used it with black powder (not recommended, btw) and never had a problem.
As good as the hand vac has been, I'm spending over 1K$ to tile the floor in the reloading room. While I was able to vacuum up powder over the years, the graphite on the powder eventually darkened the carpet significantly. I suspect the sage advice is to avoid reloading in a carpeted room.
If nothing else, it is really hard to get primers out of the carpet with any method.