I have no personal experience with 147 grain 9mm bullets. However, the question reminded me of an internet article on self-defense ammo http://www.chuckhawks.com/ammo_by_anonymous.htm Quoting from the article:
"Now it is time to impart some crucial information: NEVER use 147 grain ammo in a 9mm pistol! There was a stupid fad for 147 grain hollowpoints a few years ago, and many were suckered into buying these weak, worthless and malfunction-prone rounds. I don't care what you've heard: never use any 9mm hollowpoint heavier than 125 grains. 147 grain hollowpoints often jam in many popular 9mm guns like the Browning Hi-Power, SIG, Beretta 92, S&W and Glock. Ignore the gun magazine hype and stick to what works. If you want to gamble, go to Reno. Don't gamble with your life. 147 grain ammo sucks."
This article might be the source of your friend's opinion. Please note: I'm just the messenger!
"Now it is time to impart some crucial information: NEVER use 147 grain ammo in a 9mm pistol! There was a stupid fad for 147 grain hollowpoints a few years ago, and many were suckered into buying these weak, worthless and malfunction-prone rounds. I don't care what you've heard: never use any 9mm hollowpoint heavier than 125 grains. 147 grain hollowpoints often jam in many popular 9mm guns like the Browning Hi-Power, SIG, Beretta 92, S&W and Glock. Ignore the gun magazine hype and stick to what works. If you want to gamble, go to Reno. Don't gamble with your life. 147 grain ammo sucks."
This article might be the source of your friend's opinion. Please note: I'm just the messenger!