.05??
They may cycle after a few more rounds thru the gun but for now (and maybe later) I would just bump the load up .1gr at a time until I got function. .1 or .2gr should do it.
Another choice (handy if you have a bunch of loaded ammo) would be to seat the bullets a hair deeper say maybe .01 to .02 which will up the pressure and velocity a bit.
Depending on what OAL you are at now maybe a bit more.
Not a plated bullet (jacketed) but some numbers for a OAL change on a mild load using HP38. A hotter load would probably show much more pronounced changes.
5" 9mm 1911, very mixed range brass, S+B SP, charges as thrown after setting measure
( I had some steps in between 1.08 and 1.055 but this should give you an idea)
String: 1
Date: 7/23/2017
Time: 10:43:16 AM
Grains: 124
Hi Vel: 1001
Low Vel: 970
Ave Vel: 987
Ext Spread: 31
Std Dev: 13
RMR 124 MPR JHP 4.3 HP38
1.08 OAL
Velocity Power Factor Ft/Lbs
970 120.28 259.04
992 123.008 270.923
1001 124.124 275.862
977 121.148 262.792
996 123.504 273.113
String: 2
Date: 10/29/2017
Time: 9:42:14 AM
Grains: 124
Hi Vel: 1068
Low Vel: 1004
Ave Vel: 1034
Ext Spread: 64
Std Dev: 24
RMR 124 MPR JHP 4.3 HP38
1.055 OAL
Velocity Power Factor Ft/Lbs
1046 129.704 301.222
1021 126.604 286.995
1004 124.496 277.518 This one and the one below sort of averaged each other out, possible a bit light here and a bit heavy on the next one. But they messed up the ES and SD
1068 132.432 314.026
1034 128.216 294.35
So with this mild load .025 deeper was about 40 fps, YMMV.