Wow!!! That is very impressive! I have been playing with cast bullets in doubles, etc, but have had very limited successes until a couple of weeks ago using a Lyman 457122 mould throwing 330 grain HP wheel weight cast and a NFB Varget load / foam filler (found in Graeme Wrights's famous book) that produced really excellent accuracy and surprisingly good regulation in a .450NE.

Would you be willing to share your load data with the usual caveats around "use at ones own risk"?

Back to the OP question, I would like to thank all that have shared their views on the .416 Rigby!!!!!

I am now firmly convinced that the .416 is the way to go for this Heym Express bolt rifle, and have firmed up my order earlier today!!!!!!!!! Recoil isn't much of an issue at least at the levels the Rigby generates with 400 grain bullets, so I don't imagine I'll experience recoil induced impairments for longer shots particularly using 300 grain TSX bullets that I'd likely use for plains game. I find that the .500NE is the extreme outside edge of my recoil tolerance.

The Rigby seems to have a pretty good selection of bullets in various weights and constructs which leads me to believe that I'm not misguided in my thinking that this rifle can be a do all rifle similar to but leaning toward the heavier uses as compared to the wonderful .375s.

The Lott feels like it would be much more range limited, so the Lott would be redundant given my possession of a .450NE.

So now for the second hardest* part of all: Waiting for my shiny new rifle!!!!!!!

*. The hardest part will be to pay for the darn thing, but what the hell,you only live once!!!!!