Hello Greg,
There is a considerable difference between the twist rates of .22 Short and Long cartridges and that of the .22LR. Many a person has rechambered one of these old rifles and found to their regret that they are hopelessly innaccurate. It's better to re-barrel to .22LR if you with to use this round. .22 LR has a twist rate of 1 turn in 16". I don't have figures for the .22Long to hand but I do know they differ quite a lot. If the bore is 'shot out' then it could be relined to .22 LR, a more economical proposition.
As for A.Hajee Dossul and Sons, Karachi, they were almost certainly an emporium catering to the British colonial civil servants and military officers, providing all the comforts of home, (at a price of course). If you Google the company name you will find several references to it. It seems to be still extant.
A few shillings for engraving is cheap advertising and it's still done today. There's nothing like a bit of advertising when your in business.
Harry.
Harry....
HAPPY BIRTHDAY OL' CHAP FROM ANOTHER OL' CHAP.
P.S. I used to live in Shropshire years ago, when I was a "YOUNG CHAP"
Best Wishes and Cheers
Jerry
