Ndumo,

Thank you for the info. It was a great read about the .450 Rigby. I'd have thought that even 10.5lbs might be too light for such a cartridge. I know it mightn't be a cartridge that's shot a great deal regularly but one still has to be confident with it. Then again, you might well shoot your .450 all the time with various loads given your line of work. A removable muzzle brake is another option!

I haven't convinced myself either way whether I should go the way of a .416 or .450 but a Rigby it has to be!