Quote:
Originally Posted by domyalex
You are onto something here. Most of my brass is in the 1.282-1.286 range; those hard to seat are often as low as 1.273-1.276 Is this... normal?
I can work around this by flaring more, but then I'm over-working the longer cases. Throw away short brass or resize a _lot_ of pieces, hummm.
Base of the projectiles sometime is as high as .359, so combined with the shorter cases it can lead to the issue I think.
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*shrugs* I don't load .357--I just know me some bizarre case trivia. It's also possible that the cases in question are work-shortened, which is a thing that happens.
Sorting by length would be an option. You wouldn't have to trim it or pitch it, just sort it out.
I would honestly just expand a bit more. Look at it this way--you've already roached a bunch of free brass and some bullets trying to expand as little as possible, because you're worried about cases failing from using them too much. You're already exactly where you didn't want to go, and you're out some bullets.
I expand as much as I need to get the bullet to set down into the case. I don't want the bullet to sit on top of the mouth at all--I really want the whole base down inside. Expand as much as you need, up until the case mouth starts "trumpeting".
I've got ~150 pieces of factory Starline .44 Mag brass in circulation, atm (out of a 500-box). Those 150 cases have been loaded a total of 1000 times between them--500 plinking loads, and 500 full-power loads. I haven't had a single one fail, although I'm thinking about dumping the batch. The primer pockets are starting to feel a bit loose.