I'm sorry that my pictures don't have more detail. BTW I don't own the rifle in the pictures, but was offered it. I am having Mr. Brown build a Gibbs style half stock Long Range Target in .451 rifle with Douglas barrel for me, it should be ready this summer.
I have talked recently with a gunsmiith (a friend of a friend) who until recently ran Purdeys shop in the UK. He is going to get the address of a Austrian Gunsmith who builds flawless Whitworth rifles, his barrels are handforged and run 2K.
Joesph Whitworth in the 1850's designed a hexagon bore that in the hands of a competent shooter can keep up with modern 1000 yard target rifles...
www.lrml.org
I currently own a Parker Hale Whitworth Rifle and a Parker Hale Volunteer Rifle (Alexander Henry rifling) both are .451.
Both were made in the UK in the late 1970's or early 1980's using the orginal tooling, both are highly sought after today by shooters and CW renactors..(.the Whitworth rifles were used by the CSA as Sniper rifles...a verified CSA gun can sell for the same money a 73 RS can. )
Today Gibbs Rifle Co in Tennesse is having the Whitworth and Volunteer rifle made in Italy by Pedersoli using English Parker Hale Barrels...they run about $1300 each. I understand they shoot well...