" Royal Grade Holland that shot off the face in that chambering (and I've yet to see one that hadn't!), "

Mine hasn't. Probably will when I get to 2000+ rounds. I'll just have it fixed. The real issue here is, The only low pressure cartridge in new guns is the 470. Now, I must admint that new 500/416 looks very interesting. I like the idea of a 400 grain bullet moving out about 2200-2300 fps, good killing power plus moderate recoil in a DR.