I was also leaning towards the 461 Gibbs. However most gunsmiths in S A have not even heard of it, never mind have a reamer. I already have a double Rigby in 577/450 and am leaning towards this. Sometimes I think really 'modern' round like .303. George, I will keep it in mind but am not great at selling things, rather a trader which can be difficult since I am in South Africa!
Charls.