[gedeon3]

Pardon my ignorance; what is FMJ and JHP ? And will they work with any brand 9mm?

[andy58-in-nh]

FMJ = Full Metal Jacket (more suitable for target rounds)
JHP = Jacketed Hollow Point (used for self-defense).

[Kirkwood]

“Pardon my ignorance; what is FMJ and JHP ? “

Full metal jacket and jacket hollow point.

[George Smiley]

FMJ = Full Metal Jacket

JHP = Jacketed Hollow Points.

RTFM on your firearm, and pay attention to what they say is appropriate ammunition for your weapon.

For example, some 9mm ammunition is called “+P”, which means they are higher pressure rounds than the standard 9mm round.

You’re getting a little extra punch, which, if you’re carrying a nine for self-protection is a Good Thing— but BE FOREWARNED: DO NOT USE +P in a nine unless your firearm is rated for it.

You could end up with a collection of high velocity metal fragments instead of a firearm, and some of said fragments would be heading in your direction.