308 Winchester, 458WSM, 510WSM (RUM shortened), and a new one I'm working on.....the 500 Ruger

The 510 is actually made using the ultra mag brass.....I was having trouble getting the WSM brass up to .510 without losing some. The WSM brass works well but the losses are not acceptable. The only thing about the RUM brass is it must be turned because of the thickness.

Recoil on these isn't as bad as I anticipated it would be...especially the .510.........Now that big 500 will be a different story I bet!!!