More courtesy of Bro. Raimey
https://doublegunshop.com/forums/ubbthreads.php?ubb=showflat&Number=354793&page=3
"The only break in this Whitworth tradition was in 1898, when the steel workers went on strike. Between July and December of that year Purdey's had to go to Krupp for barrels and made eighty-three guns with their tubes."

https://sites.google.com/a/damascusknowledge.com/www/home