!925 date is doubtful, records indicate the Thomas Turner of Fisher Street closed in 1912

According to Bill Fleming's book "British Sporting Rifle Cartridges" the .500/.450 3 1/4" Black Powder Express was offered variously in 270, 325, and 365 grain bullets while the Nitro for Black Powder cartridges were offered in 365 grain bullet by Kynoch & Eley, also with Eley offering a 325 grain bullet.
H&H BP Express ammunition was offered in 330 grain and 375 grain bullets as well as a 475 grain bullet loading.
- Mike