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Message: <blockquote data-quote="diggler1833" data-source="post: 3912029" data-attributes="member: 48072">Higher case fill usually (USUALLY) helps to reduce ES and SD, but there are always exceptions. As long as one pays attention to the loading manuals, the likelihood of blowing their face off is pretty low.Something interesting to point out to new reloaders reading this: Many loading resources (Hodgdon, Hornady etc...) actually pressure test the combinations they publish.  Many of those loads hit "max" simply when they get close to SAAMI pressure maxes.  That doesn't mean that you'll always see pressure signs.  Brass doesn't have to have an ejector swipe, or your primer doesn't have to have a huge crater for you to be 5% or more over listed pressure maximum.  A lot of guys are convinced that they're not over book pressure because they haven't blown a primer or raised a bur, when in reality they are way over pressure. ^ That doesn't necessarily mean you're fixing to blow yourself up.  Everything is conservative these days for a reason.  However, it will take a significant toll on brass and barrel life...and that is if you're lucky.Temperature sensitive powders have allowed us to become more careless about simply loading to or above max. However, using ball or double-base powders can get you into trouble pretty quickly, especiallywith wide temperature swings...and that is the whole reason for my ramble here:I recently looked at (5) .410 shells that I've fired over the past year.  These were used for dispatching various pests around the house.  Dad loaded them "hot" probably 30 years ago in Spokane Washington during the winter, and probably had no issues with them then.  Well, of the five that I've shot here in SE Oklahoma during warm months, I've pierced three primers.[ATTACH=full]324947[/ATTACH]Keep in mind that these are stored indoors at a constant temperature of around 75 degrees F.  This has happened with two shotguns being used.  Here's Alliant's load data...and as you can see, sometimes the ragged edge isn't good.[ATTACH=full]324993[/ATTACH]Ive also had it happen with three rounds out of a box of (50) .357 Mags that dad loaded about 25 years ago.  Dad always bragged about just looking at the published max with his buddies and loading to that point.  Add to this the 29-2 of his that I had to add yoke and cylinder endshake bearings to in order to remove a lot of the slop that occurred after 2K rounds of hot .44 Mag stretched his frame loose.  Most of you guys are extremely experienced.  I just wanted to warn any newcomers who came across this post and thought that they'll be fine if they can get the powder to fit behind the bullet.  It isn't always the case.</blockquote>

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