I have also been going through the same exercise lately. I have been re-arranging and condensing my inventory and now have all my reloading supplies categorized, sorted by caliber and (most importantly) in one place. I just bought and loaded up some "Zero" brand 147gr FMJ's (subsonic) for my P227 w/SiCo Osprey. I noticed that with "normal" crimp adjustment, the bullets will rotate in the finished cartridge, when twisted. I set the crimp die lower and to get rounds that would not do that, resulted in slight creasing of the side of the brass below the bullet. I pulled a couple of rounds and found that yes, the bullets did have crimp rings (so they would not have likely moved in/out, longer/shorter). I just don't like the fact that the bullets rotate. I also had the same issue with some copper wash plated 147grs (forget who the mfr was). I surmise that the reason for the loose fit is a very thin copper jacket (Zero FMJ) or copper wash plated(unknown mfr). In other words, the thinner the copper jacket, the less support there is for the crimp.
I also have a box of 147gr truncated cone Montana Gold bullets and as I recall, I have not had that problem with them. Perhaps their copper jackets are thicker. I'm going to load up a few and I'll report back.
http://montanagoldbullet.com/index.php/cases/9mm-147gr-cmj.html
I'm considering trying out Hornady 147s;
https://www.wideners.com/reloading-supplies/bullets/best-bullets-by-brand/hornady-bulletsI would suggest that you buy only 100 rounds from a number of different manufacturers and test them.
They are considerably more expensive than Zero or Everglades, but if it solves the problem, I'll spend the extra money.
Here are links to a number of different low cost bulk manufacturers;
https://www.precisiondelta.com/black-friday-sale/9mm-147gr-fmj-case-1-000/#product-reviews
http://www.rozedist.com/mm5/merchan...RZD&Product_Code=R147-B&Category_Code=ZBJ-9MM
http://www.evergladesammo.com/9mm-147gr-plated-fmj-bullets.html
Curious as to what you find out, please share your experiences.