Wayne, I just got back from rendezvous at Hefley Creek, BC. While there I happened to be in a conversation with a lad who has a Pedersoli Gibbs & has shot both it and their Whitworth.

The main result was that the Gibbs and the Whitworth are well worth acquiring and both are quite competitive in the long range game. There might be some further info here that could be of interest.

https://www.google.com/search?client=firefox-b-d&q=Pedersoli+Whitworth+Rifle