I think this would be of some interest and want to share it woth you.
This is an extract from an article I wrote for "Revista Magnum" an Argentine gun magazine that is also sold in Uruguay, Chile y Brazil.
I beg your pardon my English as I simply translate the text using an online translator and made some corrections. Any correction will be wellcome.LOL

Some curious information of our 7,65 Mauser and its guns.
by Martín Godio.

Much has been written in this magazine about 7,65 Mauser virtues, for this reason, I do not claim to have any more that to add but some curious information and little known information.
Besides, I want to clarify the fact that this note does not register in any type of introspective revisionism that is so fashionable nowadays. The 7,65x54mm is in my opinion an excellent cartridge under any point of view and I only can object the lack of variety in ammunition. I am sure that the great majority of those that have had opportunity to use it, will coincide with this.
If I chose to refer to it as " our 7,65 " it is because somehow, all the “fierreros”(gun nuts??) have had some type of "relation" with it. My first hunting rifle was a sporterized M1891 carbine. To say that it kicks would be to underestimate enormously its capacity to hurt me; a practice session leaves my shoulder red and hurting for several days. When, some time later, my uncle gave me a FM 1935 hunting rifle, the recoil seems to me like that of a carbine .22.
For many years I used some other cartridges, .308 Win.,.270 Win. and .375 H&H Mag. But some time ago I get a battered sporting M 98 and rebarrel it to the 7,65. This decision was mostly economic, just an intermediate step. The idea was to use this military barrel (I get it used at low price) until I get the money for a .35 Whelen barrel. When I regulated the sights I fell in love with it. The gun, without excessively accuracy shoots very well and now it is my primary hunting rifle.
Leaving the anecdotes, we can say that one of the particularities of 7,65x54mm not much remembered is the fact that this was first cartridge developed by Mauser in being used by a country as his service weapon. Though often the 8x57mm appears in the books and magazines as 8mm Mauser, it was not designed by Mauser but by the unlucky Commission of 1888.
The 7,65x54mm was adopted at first by Belgium in the year 1889, then by Turkey in 1890 and finally by Argentina in 1891. Spain used it fleetingly in his Model 1893, an intermediate design very similar to the Model 1891, but with the system of extraction used later in the Model 1898. The Spanish Navy bought a small lot, but finally decided to adopt 7x57mm Mauser as cartridge of regulation.
Spain used 10.000 guns and 5.000 carbines of the model Mauser Argentino 1891 in 7.65mm. to be able to face to a raising in Melilla, Morocco. Argentine Government asked Loewe to send those rifles and carbines (that was ordered by and made for Argentine) to Spain. Once finished the raising, these weapon would be destined for Cuba, being temporarily the second regulation cartridge. Will they have taken part of the famous War between USA and Spain?

More to come.
Martin