Go for a round nose bullet like the Everglades V2 JHP to allow you to load a bit longer. Glock mags don't work with OAL above 1.169", and need even shorter if you use a conical JHP.
I would recommend a load of 7.7gr of Silhouette under a 124gr bullet, or 8.3gr under a 115 Everglades V2 loaded to about 1.16" with a small pistol primer (not Federal) for reliable ignition.