For those of you who don't read the "Stickied" threads in this subforum, there's one I did 8 years back, comparing the 200, 225 and 250 FTX bullet composition
Link Here.
Here's a side cutaway view of the 3 from that highly illustrated thread in the above link:
The 225 was the thinnest of them and no surprise as it is designed to perform in the 45 LC. Still, there isn't a lot of visible difference in wall thickness in the 3. I honestly don't understand why Hornady doesn't recommend the 200 FTX. I kinda get not recommending the 225. Of course, not recommending doesn't necessarily mean "Advising Against". Jeez, I wish the 250 FTX had a cannelure right where the seating depth yields a COL of say 2.26. Been singing that song for a long time.
Hoot