Yup.
He can make PF... but he'll be flowing primers, bulging cases, and riding the odds of a Vegas bathroom slot machine in regards to pressure spike.
He thinks because his buddy is an experienced open shooter, it's okay, (I mean that with all due respect, not trying to be a d**k). Unless his buddy has experience with a V12 or a Akai w/ a ton of popples, I'd recommend he stay in his lane and get in touch with someone that does have experience w a V12, etc.
The only way to safely run a gold team in 9mm, is to get a 6" barrel from eaa, chop it, thread a comp. and run a handful of poples/comp.