Roostershooter I don't claim to be an expert. I'm still trying new things. Along with the others I would be grateful if you would share what polishing agents worked best for you. We're always looking for a better way.
I like walnut for heavily tarnished brass. I have loaded the "dusty" brass without problems. I now run in corn cob after walnut to remove the dust. Adding a little Nu-Finish to the corn cob makes the brass glide through the carbide sizing die.
I have been very happy with my Shilen Standard Trigger. The rifle I had cut up for the build was pre-X-Mark Pro so it didn't require the extra mods required for newer rifles.
It may also be worth your time to set the thing up for detachable mags.
If it's an extractor problem get ready to call Springfield. From what other XDM guys have told me you will have to ship the slide to them so they can "fit" an extractor. If you send it in ask them to fit and extra so you will have a spare in case it may fail again in the furture.
I'm not sure about PD's lube. Sorry I can't help with that.
Below is another good supplier of lead. I use the 200 gr SWC recipe found on "Hipowersandhandguns" website in my 1911's.
Precision Bullets
IMHO. If you want to make major PF and do not want to add 40 S&W to your loading routine I'd say the 45 would be the way to go. If you don't need to make major PF I would recommend trying the 9mm. The 9mm is cheaper to buy/load ammo for and generates less recoil. One the other hand, get what you like.
They definitely feel different when you size them on a LNL.
A shooter on another forum made the recommendation to keep a few sized 9mm cases at the press. When I find a 380 in the sizing die I pop it out and replace it with a ready to prime 9mm.
This seems to be a common topic amongst the 5.25 shooters at the local range. I'll be purchasing a kit of aftermarket parts just in case the pistol lays down at a match.