Me, distinguished... -here-...?

Naaahh!

But I do have a bottleneck .450 double rifle, it's a BPE gun though -- and I'm using 450no2 Nitro brass in it.

From what I've read about the 450no2 3-1/2" Nitro Express and the guns set up to run that round, it would definitely be the choice for me.

The reason for that is that I've heard of numerous guns chambered in that round that did amazingly well *Loaded Down* to run .458 bullets designed for the 45-70
Being able to use your nice, expensive, goregeous DG double rifle on light skinned game here in North America is a good thing. I've seen the 'nitro for black' reduced load specs from the member of this list who's using that chambering as his handle here, his notes indicate that they all hit to regulation in his gun. I've heard of other 450no2NE rifles that do the same kind of thing with reduced loads and light bullets. I think Grame Wright noted something to that effect on this particular 3-1/2" bottleneck.

The Nitro for Black loads are easy on the shoulder and they're easy on the brass. The guns should be tough enough where it just isn't an issue for them, but you might want to consier that as well while keeping in practice with your DG rifle. Full house nitro loads are also more expensive to shoot, from the standpoint of pricey bullets, bigger powder charges, -and- stress on your five buck apice brass cases.

Getting brass doesn't seem to be that big an issue, paying for it is another issue altogether. Any way you cut it, unless it's on some kind of clearance sale it's gonna run you nearly a hundred bucks a box of twenty.

I haven't heard of the .470 or the 3-1/4" .450 doing so well with anything but the regulation load.
And for what it's worth, if I were shopping for a full nitro DG gun (which I'm not but I'm always looking anyway) I'd want to know for double damn sure how well it shot with whatever it was shooting. At the price of a full nitro DG gun, the price of brass and dies wouldn't necessarily be so much of an issue as long as it were available and wasn't stupid expensive.
My money would be with a particular specimen that did well with more than one load, fit me well, looked right for my taste, and I could afford.
A Scottish snap action 450no2NE non ejector with damascus barrels, versatile regulation, and which fit well would have me looking pretty seriously into an equity loan...

--Tinker