There are metric calibre rifles in the former Portuguese and French administered parts of India. Some years ago, a friend found a 9.3x62 which he passed over because he could not find ammunition for it. I also know of Brno 7x64s and other oddities for India coming up on sale from time to time. Other than the 7x57, 8x57, 6.5x54 and rimmed Mannlicher 6.5 etc

The one bolt action round that was and remains very popular in India is the superb 30-06. For a long time, the NRAI (a bunch of anti gun and shooting sports morons whom I have had several battles with in the Indian press since the 1980s) offered 30-06 ammunition from Sellier and Bellot and others along with 22 rimfire match ammunition simply because many of their members owned (and continue to own) 30-06s. I have also heard rumours about the Indian Ordnance Factories offering new 30-06 rifles for some years but have not seen any or heard about their being sold in India yet. But then, I have been away for five years.

I have posted elsewhere on these forums a picture of a 9.3x62 Mauser rifle owned by a friend in Pakistan over four generations and when we take Pakistan as a territory that was formerly administered along with India by the British, it is clear that this round was available there. The 10.75x68 was sold by the British as the 423 Mauser and I have seen rifles so marked in India on several occasions from Cogswell and Harrison and others. I think it was more popular because it was available in what would be a more familiar inch designation.

Good hunting, gentlemen!