In 9mm Para +P+, I like 124gn Golden Sabers sitting over 7.8 gns of Alliant Blue Dot for 1235fps (420ft/lbs ME). If the projectile doesn't stop them, the muzzle flash will.....
And, all the usual disclaimers- I'm not responsible for your gun becoming a grenade. Use only in well made modern firearms at your own risk. Tax and batteries not included, your mileage may vary.
I have absolutely no problem finding them....