It will and does but when you inspect and poke it out it goes away.
How do you get the lube off the full length resized cases? With military cases, it's especially problematic because you kinda have to deprime with a universal decapping die or you risk breaking decapping pins and then after the universal decapper, you have to lube them to resize them and trim them and do whatever case prep steps you want to perform. Even if the once fired military cases came to you bright and shiny (which they frequently do), the lube has to come off so you need to throw them in a tumbler of some kind. I use an old Lyman tumbler with corn cob media. it works perfectly for this. It only takes about an hour to get them back to bright and shiny and unlubed but I am always finding errant pieces of corn cob media in those flash holes after doing this, like every 5th or 6th case maybe.
No one has ever experience a FtF due to corncob in the flash hole, although someone might suspect they have.
Courtesy of Otto:
And every delivery vehicle carrying smokeless is equipped with antigravity tires.
I hear what you're saying but is driving down the highway really equivalent to putting loaded rounds in a vibratory tumbler? I'm not arguing one way or the other about the practice mind you. I know people do it. and I know all the reputable reloading sources I just listed say not to. I don't do it but it's 60% because I don't have to and 40% because I don't want to.And every delivery vehicle carrying smokeless is equipped with antigravity tires.
“driving down the highway “. Makes it sound so peaceful and tranquil. No potholes, no traffic or construction work, no uneven lanes or shaky forklift drivers, and every package handler wears white silk gloves with feather padding… sure, the only disturbance ever experienced by any product is at the hands of the end user. It does seem a little bit ludicrous doesn’t it? The physical evidence says consumer grade tumblers don’t alter the performance of smokeless powders. I don’t blame the manufacturers for saying not to do it but it’s like the tags on mattresses: what exactly is removing the tag supposed to harm?
I think a vibratory tumbler would cause more vibrations on the powder kernels inside the case than driving down just about any road. The kernels rubbing against each other would act on one another in the same way as the media acts against the brass itself. In other words, I think it would alter the kernels of the powder in ways that transportation/shipping/carrying would not. And the manufacturers seem to think it could be dangerous to put loaded ammo in a tumbler. I don't have to do it and it isn't recommended so I don't. On the few occasions where I might have, I just wiped the lube off with a rag. 20 minutes might not be a big deal but it's still not recommended and it seems like bad practice to me but to each his own and this is why I only shoot my own reloads.
