If those screaming rounds are hollow points, I'd love to see one shot through gel to see what happens to the bullet. At some level of FPS every hollow point becomes frangible. Even Golden Sabers in the lonely 380 have been shown to break up when loaded hot. I said XTP is the only hollow point in 10mm worth the FPS because it won't break up by design. Even that might not be true when reaching 1500fps? I did also say the boutique loaders loading with Gold Dots at hot levels might not be that great of a round.
I'm reading that the avg 9mm FMJ goes anywhere from 24-40" in ballistic gel. Just good info to have. All three boutique hot roaders (DD, BB, UW) sell a "wood" 9mm. All are 147gr flat. Since the meplat/truncated nose doesn't do anything until large caliber, I would think a hot 124gr would do better for the increased fps. (truncated rounds only crush more in large calibers
http://www.gsgroup.co.za/articlepvdw.html). It's not the fact they sell it that tells me 9mm could do fine, it's that the difference in 10mm is more hyped than supported.
Think about it. Nuclear Fiocchi or 124gr 9mm is 1250fps. Hottest 9mm 115gr Carbon at 1350fps.
We have a load in 10mm that was just questioned at 165gr at almost 1500fps.
I'm not saying there isn't a difference. I would ask what you are hitting with that where it will make a difference. Additionally, hitting with a bullet that isn't designed for 1500fps at a massive 6" barrel, might as well buy frangible rounds for hunting-which no one would suggest.
I've ask before and never got a real reason for why red dots come one long barrel guns (unlike the new MOS Walther PPS). Red dots, you would think by their function, aren't doing anything on a longer barrel. Unless it's competition and power factors are at play?