I have the KISS bullet feeder on mine and so far, it feeds any bullet I put in it.
As for the P/W autodrive, there is no way I would run it without a bullet feeder. You won't want your hands inside the machine while it is running that fast.
On the Primer issue, it takes a while to swap from large to small. That machine was made for production and not swapping calibers/primers as easy as the other machines.
Hope this helps some.
Dale