I'm also a big proponent of having the correct head stamp whenever possible, especially if you own guns of the same caliber as the brass you are reforming. When I got my first 99 in 250 Savage, I was initally unable to find brass. I did own a 22-250, so I just resized some. That worked well enough until I was loading 22-250 rounds and found I had resized the 250s back to 22-250! I've since found proper 250 cases, so problem solved.