A lighter bullet weight might lower your point of impact on the target even more.
I have a Glock 29 and 20, the difference in velocity:
Glock 29 SF
Corbon 150 JHP @ 1,231 fps / 505# KE (-45 fps)
Hornady 155 XTP @ 1,256 fps / 543# KE (-79 fps)
Hornady 175 gr. Critical Duty @ 1,083 fps / 456# KE (-63 fps)
Glock 20 SF
Corbon 150 JHP @ 1,276 fps / 542# KE
Hornady 155 XTP @ 1,335 fps / 614# KE
Hornady 175 gr. Critical Duty @ 1,146 fps / 510# KE
I handload, loaded the 140 gr. Barnes Tac-XP to very controllable PF.
Glock 29 SF
Handload Barnes Tac-XP 140 gr. @ 1,190 fps / 440# KE / (-57 fps) PF 167
Glock 20 SF
Handload Barnes Tac-XP 140 gr. @ 1,247 fps / 484# KE / PF 175
Tac-XP bullet performs well at that velocity.
Prograde 10mm 140 from 4.5'' barrel: 1,216 fps
4 layer denim then gel, 12.9'' / .76
https://www.youtube.com/watch?v=Vir-XJm6VME