The Edge was one which I hadn't appropriately researched, but after it came up in this thread, I corrected that lack of understanding - I had previously assumed the Edge was only slightly faster than the 338-300RUM. Apparently it's a bit more than "slightly" faster...

So... Cases aren't cheap nor widely available for either, but 338 Lap brass seems to be readily available off of the shelf (not to mention factory ammo, should I ever be foolish enough to pay for it), rather than being wildcat brass.

On the other hand, I've had a Lap, haven't had an Edge, and it's a little cheaper to get a RUM ready action than a Lap ready one. Looks like dies are out there on the shelf... Kind of a non-wildcatter friendly wildcat...

Is it 6 of one, half a dozen of the other? Any reason I might be missing to go Lapua vs. Edge, or Edge vs. Lapua?