I say Daryl : I think Rigby did neck up the 416 to 450 Rigby ,only a bit less than 460 how ever (same case, just no belt ?) so not really a down load Eh !
All your points are well noted !
But now i,m worried about the bad feeding of the short case ??
It has not let me down after over 20 years ,but you just never know ?