I have shot a couple with a 1898 Argentine Mauser chambered in 7.65x53. I make cases from mil '06 and load them with 174RN bullets and 4320 powder.
The only factory rounds avalible back then where the Norma's and I did use a few. Mostly bought for the brass, when I bought them. Remington also loaded them as well as chambered a rifle or two for the round. They are expensive IF you can find them today. I did not know they where being loaded again.
I bought 6 of these rifles form Century arms back in 1988. My Pop got one, my cousin another and I have four. The first one became a 35 Whelen, another a 280, the third a 6.5x63, the last is still a 7.65. One day, it will be either a Swede or a 257 Bob for my wife.
Its a very good caliber every bit a 308 in preformance. Hand loaded its closer to the 30-06.
CW