My JHPs will jam, rarely, if I'm not gripping the weapon correctly. My suggestion, hold on tight.
In making hand-loads with 230 XTP bullets (hollow points) I did find that they wouldn't even load into the mag at maximum length. About 7/100 under max and they feed and shoot like a dream.
Experiment with different ammo. Hold on tight. Modify your firearm as an absolute last resort.