I'm about 800 rounds into my reloading journey with the Dillon 550B press and Ruger LW Commander in 45ACP. The gun has run about 1,000 rounds so far.
Yesterday I had four weird failures to fire I'd like to show the forum for some analysis... The gun:
Ruger 45ACP LW Commander
Wilson Combat 47D 8-round magazines (3 different ones) The load:
Wilson Combat 200gr LSWC
4.9gr TiteGroup powder
Federal Large Pistol primer
Range brass, some shot 2-3 times
(4 of 50 I loaded in the same sitting) What happened:
On trigger pull, no bang..
Removed magazine, then found it very difficult to rack back the slide...had to really pull to eject the round, which seemed to be 'stuck' in the chamber.
The rounds all have very similar primer strikes, which don't look like the ones that I usually expect -- they are more gradual craters than sharp divots as in the two fired cartridges also shown. But could this appearance just be that the rounds weren't subjected to the heat and motion of being fired?
Because the the gun was locked up til I was able to rack the slide back and eject, I wanted to double-check the rounds' dimensions.
(I had 'plunked' all the rounds before
I went to the range and they had all fit fine in my EGW checker.)
So here are the four rounds in the EGW after
They still fit fine in the EGW and plunked with a tiny bit of resistance in the dirty barrel after I took it out of the pistol for cleaning.
COL doesn't seem to have been compromised by their trips through the pistol:
When I did eject the rounds I was mindful that a mighty pull could impact the primer with bad results and it didn't seem that the primer dents were made by anything but the firing pin.
Further factors: I had noticed some leading in the chamber and barrel and had been working away at it. When this occurred there were a few small lumps and smears in the chamber...under heat could that have 'grabbed' the cartridge making it difficult to eject? (Last night I picked up a Birchwood-Casey Lead Removal cloth and scoured out the lead.)
I also removed and cleaned/lightly oiled (with FP-10) the firing pin/spring and the extractor. They weren't particularly dirty btw.
This happened in each of my three Wilson 47D magazines. In the sequence of shots it happened in the second, sixth, third and second shots of the mags.
Grasping at straws: the brass was cleaned in an ultrasonic cleaner, with spent primers in place. I let them dry for 2-3 days and then run them through the Dillon...could I have been getting remnant moisture in the fresh primers?
One of the four is X-Treme, which snuck in to this batch of 50 which had I sorted to be all Winchester. So I shot 49 reloaded Winchester cases and one X-Treme here...
Not thinking it could be bad primers...but ... could it? They all came from the same box, part of a big box of 1,000.
So many variables!
Your thoughts and advice very welcome.