John
Your stats on the .416 Taylor are way off the mark. My 1991 vintage Zastava actioned rifle has no trouble achieving 2400fps with the 410gn Woodleigh bullet. I have fired several hundred at my favourite load of 2360fps using AR2206H (H4895 in the US). I also get 2250fps with the 450gn bullet using AR2208 (Varget). My Winchester cases (.458W) have been fired at more than five times using these loads.... I neck size for three loadings & only use once fired cases when chasing big stuff.

I know the .416 Remington is a bit better when handloaded but it is a long way from the Rigby which easily achieves 2600fps with the 410gn bullet if you can hang on to it!!

My rifle is 8.5lbs without a scope & magnaported, I have no trouble catching up to fleeing pigs with this outfit... I don't feel real comfortable with the notion of chasing dangerous game with a 10lb bolt gun. I think Szihn is on the money with his comments!

Rule 303 am interested in your experiences with the Hydro, especially the extra length... I am about to load some for Water Buff, I see they are slightly longer than the 450gn softs I use & my commercial action feeds up to COL 2.400".