FWIW 147gr 9mm ammo is a relatively recent development- early 1980s IIRC. Also IIRC, German military bullets started out at 124gr and progressed to 115gr and then 108gr due to raw material shortages late in WWII. For many years, American commercial manufacturers largely stuck with these 3 weights. The 147gr bullet was intended to maintain decent muzzle energy while keeping the bullet subsonic when used in a ~10"bbl submachine gun with a suppressor.
carguychris... thanks for that info on 147 gr. 9mm bullet weight. My preference is for at least 124 gr. in this caliber, if not 147 gr. I'm not a fan of 115 gr. except as target fodder.