Do you mean 7.63mm Mauser, or perhaps 7.65mm parabellum? There is no 7.65mm Mauser, but the 7.63 was based on the 7.65mm Borchardt. Either way, it is a bottleneck cartridge, while .32 ACP, also know as 7.65mm Browning, is straight-walled. The two cartridges are in no way interchangeable.
Yes,
Yes, the .32 ACP is the same caliber as 7.65 mm Browning ammo. Note that it is NOT the same as 7.65 mm Luger, and also not the same as 7.65 mm (French) Longue.
The 8mm Mauser is a good black bear round. American 8mm is kind of underpowered but with handloading or European ammo its in the same class as 30-06..
It is a munition that's 7.62 mm in diameter by 25 mm in length.These dimensions refer to a Russian ammunition used for the Tokarev pistol and several Communist-era submachine guns, and to ammo of the same dimensions for the German Mauser pistol. Although the Tokarev ammo will chamber in a Mauser, it should NOT be attempted, as the Russian ammo is loaded much hotter.
No
The Model 1903A3 rifle is base upon the Mauser 98 action but they are not exactly the same.
No
7.92x57mm, better known as 8mm Mauser. Same caliber as the German military's Mausers.
No. 7.65x17SR is .32 ACP.
Yes it is
No. Not all 9mm cartridges are the same. 9x19 (a.k.a., 9mm Luger, 9mm Parabellum), for example, is different, hence, not compatible with other 9mm cartridges, such as the 9x17 (a.k.a., .380 ACP), 9x18 Makarov, 9x21, 9x23 Mauser, etc.
About the same. The 1903 Springfield used a licensed version of the Mauser action used on the German Model 1898 Mauser.