160 feet per second is all but meaningless
That's the difference in your 357 hst load vs 124 +p gold dots from a g19, your golden saber ammo is not a shining example of 9x19's potential
There's nothing in the real world that a 12x grain .355" bullet won't do that adding a mere 160fps will make it do.
357 sig's claim to fame was that it replicates light 357 mag loads when they were fired from a 4" service revolver. It's never caught on because you know what else does that? Modern 9mm loads
Like I said I WAS on the sig bandwagon too. But after awhile I came to realize that the "big three" (or 2.5) are tops for a reason.
Using my example:
Glock 32:
Federal HST 125 gr. @ 1,358 fps / 512# KE
Glock 19:
Golden Saber 124 gr. +P @ 1,152 fps / 365# KE
There is a 200 fps / 147# KE difference in 9mm +P and 357 Sig from my pistols with 4'' barrels, seems worthwhile (meaningful) to me.
Speer advertises:
380 Gold Dot @ 1,040 fps / 216# KE
9mm Gold Dot @ 1,210 fps / 374# KE
That is a 170 fps / 158# KE difference.
I think that there would be a meaningful real world performance difference in those .35 bullets given that 170 fps / 158# KE difference.
The 380 is regarded as marginal whereas the 9mm is generally deemed sufficient for SD - over that "meaningless" amount of difference in power.