I've gone through about 500 rnds of Speer Gold Dot +P stuff with my P99. I've got >2000 rnds thru mine, and I'm changing the guide rod assembly since the rod is a bit chewed up.
The other rnds in that 2000+ count are std 124gr & 115gr.
This includes Std Geco (used a lot of this);
message from Dynamit Nobel - RWS Inc.....
"the max pressure Geco 9mm is determined by the CIP-Regulations: 2.350 bar.
Nr. 212 5870, Geco FMJ, 124 gr., Vo of 360m/s (1.181fps) from 125mm test barrel, energey Eo 518 Joule:
is loaded to 2.100 up to 2.200 bar; piezo-quartz measurement, position of measurement hole: 12mm from head of case (internal case pressure measurement, barrel length 125mm). "
So, according to the manufacturer, this particular
Geco 9mm cartridge is loaded within SAAMI std pressure
limits (max 35,000psi).
My conversions:
2100 bar = 30,458 psi
2200 bar = 31,908 psi
2350 bar = 34,084 psi