This morning I took the Dillon reloader apart and reset it up for the 9mm. Using my experience and reflecting on comments here, I dutifully set up each die. I went with a minimum bell and a conservative crimp, just enough to fit the gage. Guess it is hard for me to consider plunk a technical thing...........
My first cartridge of the day with the newly adjusted machine, was..............perfect.
The second would not enter fully the gage by about a tenth.
I tried a champer on the next case, it gaged. Tried another one with the prechamper, would not gage, about a tenth out.
Tried lubing the bullet base with a champer on the mouth of the case, did not gage.
The cartridges that do not gage, all exhibit an offset from center of bore line..........roll the cartridge on the table........get the ups and downs of the nose of the bullet.
I measured parameters of the belling die and the seating die; nothing stands out other than perhaps the fitment of the seating die. It has the rounded insert for round nose bullets, but am eyeing that feature a little this morning. Might take it out to the lathe to enlarge the cavity there just for something to do on a bad weather day.
I am a victim of my own thought processing, detail is everything. The buck stops here and no where else. Just because something was amiss with tooling or method, the result is the same; and tis up to me to fix it. Guess that is why I held my position in the defense industry for so many years.......even was respected which in later years got harder to do with the new management style of blame goes downward.
It would be interesting to hear about the new chambers in the newer polymer guns, perhaps a new thread huh? Hard to imagine a big maker marketing a new pistol to the masses that predominately do not reload, buys the cheapo 250 round box; would use a non-SAAMI spec. It would be interesting in another thread to hear details about such adventures and why they did such in today's saturated market.
Here is why I am interested, a couple of poor picts. Appears to fired out of battery, but why............I have the two suspicions, but jury is still out here. Sending the pistol back to the manufacturer is really not much use, been there and done that a time or two; so probably will become a safe queen unless the Rick can come to grips with whys. I am somewhat thankful that this did not happen with a full mega magazine full of rounds, happened on the last round. Debris in the face a little, threw the extractor across the room(reused), and blackened things up some. The load is with unique, so a double charge does not seem too feasible, no debris on the star of the press at any time fwiw. Report was normal, not a biggie boom/flash etc etc.
I have beat this to death, but as usual; detail does not come easy. I am done with the thread, thanks for the comments.