"After WW1, Holland & Holland sold guns bought from Webley & Scott as 'H&H Shot and Regulated'. They were taken to the H&H shooting grounds and were there shot and regulated before being sold with the seal of approval of Holland's. The guns were of plain finish and medium quality. The actions are engraved ‘H&H'. The top rib is engraved ‘Shot and Regulated by Holland & Holland'."
The above is taken from Sproting Shooter written by some chap named... Diggory Hadoke
I am sure that H&H and many others had been doing this for decades.
