Swiss M1889 and GP11 Projectile drawings


#1

Can anyone direct me to a Web Page etc, with good quality (CNC type) Designs (Metric) of both the Swiss M1889 Projectile and the GP11 (1911) projectiles…???
TIA,
Doc AV

info@avballistics.com.au


#2

I have never seen a dimensioned GP11 drawing published, and I do not have one. It is still in use by the military, maybe this is one reason for this.
Only data I know for sure from a Swiss source is an ogive radius of 9.0 diameters and a boattail angle of 9.5 degrees.
Diameter is 7.8 mm.

Originally it had no crimp groove, which was added in 1929 after feed problems in Lmg 25 light machine gun.


#3

Here’s one of the GP11 and GP90 (closest I have).

Paul


#4

Great information for ballistics freaks like me. Thanks a lot.


#5

Note that the round nosed bullet shown is the jacketed 90/23, not the original 90 bullet, which was paper-patched lead, with a steel cap. I believe there is a significant difference in diameter between the 90 and the 90/23. Jack


#6

I’m very short of drawing of Swiss stuff but here are a couple from the minutes of the Small Arms Committee;

Definitely not CNC ready and definitely not in Metric !

Peter