DStroud, that's fantastic! Next you're going to show us five rounds inside a 5" group at a thousand?

Are these bench mounted systems as fast as an RCBS handheld?

Trying to set primers at a certain level with the aid of a stop introduces variable we have no control over. We can control the depth of the pocket and seat to the bottom. We can't control the small differences in the rim thickness and if you utilize a method of seating that does not seat to the bottom those primers will have a bit of cushion when the firing pin strikes.
I like the RCBS bench mount auto-prime, you get positive feedback when the primer is seated. I don't mind filling the tubes. The only issue I've had is when using a generic shell holder not holding the case in alignment with the primer punch resulting in primers being flipped on their side or flipped completely over.

Not sure if its faster or not, but I use my RCBS rock chucker press. I guess the down side is that you have to "load" the primers 1 by 1, but once I get in the groove, I can get them done pretty quickly.

The primal rights web site has a video. Guy primes 100 pc as quick as a hand held Lee

I have also been on a search for something similar. I use the Lee Auto Prime 2, which is press mounted like a die, and primes on the top of the press. I like this priming method because I can control the exact priming seating depth. The problem with hand primers is you WILL get inconsistent primer seating depths and have some primers that are too deep or not deep enough. The Lee system I use gets it within .001" every time.

At SHOT show in Vegas, I can't remember who, but it was one of the big players was coming out with a new priming system that was adjustable and bench mounted. It was either RCBS or Lyman, I think. I was going to keep an eye out for it.

Also, according to ATK ammo techs (CCI, Federal, etc), you want your primer depth to be .004" to .008" below flush for proper primer depth. I try to get .004" to .005" deep on my ammo.