[quote=“Fede”]First report indicates “weight of projectile” as being 680 grs (1.55428 oz / 44.0633 g) while the second report indicate it as being 1.55 oz (678.124 grs / 43.9417 g). I am missing something? Projectile weight is also too light if compared to reported 13.2 mm projectiles used by Japan.
If this 13 mm AT rifle round never existed we must admit that almost all data in the reports should be wrong (Type, Weight, Magazine capacity, Rate of fire, Weight of complete round & Type of mounting). Don’t take me wrong, I also believe this could be wrong anyway.
I didn’t notice that those “6.5-mm. machine carbines” could be reference to the 6.5 mm Model II submachine gun. This was tested by the Army in June 1937 in colaboration with Nambu Small Arms Company.[/quote]
Fede,
Sorry, I calculated that last data by Troy ounces, which is given as 32,151 ounces per kilogram…which lets me come to 1000 metric gramms divided by this number 32,151 multiplied by 1,55 = 48,21 gramms…but if it is 1.55 ounce (av), than your calculation is correct for the bullet weight with 43,9417Gramms…(but maybe someone has backcalculated (av ounces to tr ounces, than he will end up at 680grs…)…but thats maybe my mistake, as i am not used to knew, what ounces are (TR) or are (AV)…
I just asked my friend TOKOI, who actually is on visit here…and he said, there was no other gun in 13mm, as the Mod.92…
and he confirmed, that the 6,5mm (SMG-Round) was also tested by Naval forces at home…
Anyway, he is now also interested, and will start his search to clarify this question…
All my best
Forensic
Tony, the info, that there was a 50mm cannon cames also from TOKOI, but he will check this. It was only in his mind, to have read something about that caliber in japanese papers…but maybe that was also only an experimental gun…But I will have his answer soon…
Your remark about .80 makes sense…
Forensic