I've had my 550 for 25 years, and I have gotten up to the 500 per hr. speed, but usually work in the 300+ per hr. Heck, I'm retired now and don't need to be in all that much of a hurry.
I have the Dillon Square Deal and I can comfortably produce 200 to 250 quality rounds of 357 per hour but no way could I pump out 400 to 500.
I have developed a good rhythm which allows me to work at what I consider a safe and steady pace.
I would rather be making quality bullets in preference to producing them in large volume at high speed and being nervously doubtful about the result.
Anyway, speed isn't what reloading is all about, it's supposed to be a relaxing and pleasurable experience with no stress.
My two cents.
Campfire
I would rather be making quality bullets in preference to producing them in large volume at high speed and being nervously doubtful about the result.