OK - does this thing have that weak of a pin?  I was only running 9mm cases through it.  I ordered 4 of the regular pins and 4 of the undersize flash hole pins - but this sucks, now I have to wait a week to get going again.  Any feedback as to how to ensure not to break pins?  I'm worried this will be a common occurrence.

I’m IN on this topic, was getting ready to buy this press to help process brass faster.

Assuming your using a Lee universal decapping die? I use the squirrel daddy replacement pins. 3 come in a set, but one is all you'll ever need.

Here's a link to the APP capabilities. Definitely worth the price. https://www.ar15.com/forums/armory/Lee-APP-tips-and-tricks/42-510869/

Are you sure you didn't run into some berdan primed brass?

It's pretty rare in 9mm, but can happen.

The Lee decapping dies are pretty good in my experience. I prefer the Hornady decapping rod though since it has the replaceable tips that are much cheaper.

I've only used LEE and RCBS decapping dies.

Never broke any pins.

A few stuck cases, but that's my fault.

The Lee App doesn't use a standard pin, like their decapping die has - it is a different design completely and uses a completely different pin (so no aftermarket pin from what I believe).  This is what it looks like:

https://leeprecision.com/APP-Deprime-Kit-Product

Not sure it would be a press issue, maybe off center Prime hole, Berman primed brass, or bad decapper pin?

I just sized and decapped 1000 with mine.  Had three stuck cases, easy to remove and lee recommends not sizing for this reason.  But over all worked very well.  No broken decapper pins.  

I was using the decapping set that came with the kit - not the standard die.  I can put the standard die into the press, no issues there.  I haven't had issues with the standard die and pins - just the one that came with the press.

Alright, I removed the depriming device that came with it and installed my standard Lee decapping die and it works pretty good now. I wouldn't say that it's flawless, because your still need to watch out for upside down cases, as well as those with smaller flash holes then normal (damn Norma brass!). BUT, I'm super happy with it! I was able to crank out at least a thousand 9mm cases in less than an hour! This is definitely a game changer for decapping large amounts of brass before washing it!

A few things that I'd recommend for anyone that gets one.

-Get the deluxe model, the upgrades are worth the money
-Use an actual Lee decapping die, not the device it comes with
-Buy the pass though shell holders, instead of using the plastic thing that comes with it
-Get the brass sorter for the top of the tubes. Even though you may still get an upside down case every once in awhile it's still worth it!

The only pain in the ass is if you are going to change calibers you need to adjust the height of the shell holders. There is a guy on eBay that makes a kit you can get that makes this super simple but it's not cheap. For now I'm sticking with the factory setup for this.

My final observation is, there's a lot of plastic in this thing. I sure hope it holds up over time. If not the parts aren't super expensive but it may be a good idea to have extra parts on hand just in case.

I thought those weren't supposed to break. I'd reach out to Lee and ask them what's up. The APP doesn't have much leverage so either it was gorrilla smashed or there was a defect in the decapping pin for it to break at only 2-300 cases.

I bet Lee replaces it at no charge.

Yeah it's easy to over do it. I bought a lot of surplus brass and it appears that there were some crimped primers and small flash holes. Also discovered that whomever I bought the brass from didn't do a good job removing all of their steel pins. Went though it all this morning and removed quite a bit....ugh. That'll definitely break a decapping pin.

I use an FW Arms primer popper (or whatever it is called) with my APP.  That thing is amazing, I've split rocks in half before, berdan is no problem either it just goes through them.  If a case gets sideways, it also goes through the case.  Might be a little over the top, but it works.

Doh!  I've done that.  

Glad you are getting it figured out.  

It's not as nice as the dillon 650 I used to have and used more for brass prep than loading, bit it's a heck of a machine for the $$$$.

Even with its quirks it's way better than one at a time.

It's a perfect partner for a single stage press. I'm using the APP to decap, FL size and bulge bust 9mm, 40SW, 45acp and 223. Really churns through the brass quickly.