When Japan adopted the 7.62x51 NATO round, they decided that the recoil was too heavy in a rifle, so while they kept the full-power round for use in MGs, they developed a low-recoil variant for their Howa Type 64 rifles. I believe that this fired the standard (9.5 gram / 147 grain) bullet with a reduced propellant load giving a muzzle velocity of about 700 m/s (2,300 fps).
I understand that Spain did the same initially in its CETME rifle, but I don’t know any details of their ammo.
Can anyone confirm the Japanese information and provide any details of the Spanish low-recoil ammo?
Thanks for any assistance.