Continue to test/observe.
I use 124gr/+P HST and I routinely press-check my P30SK (~650rds), and it doesn’t/hang do that. OAL the HST/JHP is 1.097 vs. 1.105 FMJ, .008 difference is negligible between SD/range ammo.
When you press-check, allow the slide to snap forward (don’t help it back).
What is your lube?
Some are reported to gunk up (Froglube). The chamber is polished, run it dry/clean with a patch through it.