I can run a Saeco 4 cavity about one cycle every nine seconds. At that pace I could get 1200+ per hour. I felt it for several days after.
I stopped casting like that since it was not enjoyable anymore. Last year I did not cast more than 1000 boolits total.
I decided to get the Master Caster to see if I could cast without pain. It has done so well for me and the aches and pains, I have cast over 16,000 boolits and it is not even December yet!
Not having the pain is worth the cost to me and the extra time is not an issue. A good trade in my mind.