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I have my 550 all setup and upon completing my first 20 rnds I noticed that the 9mm case in the center after coming out of station 1 looks like someone squeezed the center of the cartridge because it has a depression ring going all the way around it (looks like one of those old egg timers but not nearly that bad) after seating my 124g bullet and crimping it is pretty pronounced and you can feel it? if I don't run it thru the sizer die and only seat the primer it's not there?
Am I doing something wrong or should I not size new brass, I have carbide dies and ran the #1 die all the way down to the shell plate and then backed it off about 1/2 turn
Can somebody tell me if this is normal cause it does not look right to me.
Thanks
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Posted by: Blurr012
Posted on: 2008-05-15 at 07:42:46 AM
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Hey!
Umm, mine look the same, i case guage them and test fire 50 out of every 1000 i load, they all go bang and i have had zero jam or malfunction. i know exacly what you are talkin about, but like i said i have no problems with mine, i also role mine across a flat surface to make sure they arnt deformed. so give them a test, if u dont have a case guage u can pic one up from dillon for like 12 bucks. also, you can get all the specs off the web on the exact diameter of the case, measure them where they look like an egg and if there with in limits they will prolly fire just fine good luck
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Posted by: dillon
Posted on: 2008-05-21 at 11:00:03 AM
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How you described is exactly how sized cases should look. 9x19 is a tapered case. The upper portion of the case is resized straight, and to smaller than bullet diameter, to ensure the bullet doesn't set back upon feeding into the chamber. A loaded cartridge should be "hourglassed" in profile.
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Posted by: darrenjet
Posted on: 2008-06-18 at 12:57:48 PM
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Hhhmmm. I realize that the 9mm is a tapered case and that the hourglass shape is correct, but that being said, I know several people who reload ton's of 9mm with the 550 and I don't know anyone who sets up the resizing/decapping die per the instructions (screwing in until contact then backing off one turn). From what I have been told, it is unnecessary to work the case to such an extent. Most people I know back the die off further so there is a less pronounced hourglass shape. You aren't really resizing full length, I guess, but I've not heard of any issues with anyone I know or had any issues myself. I'm curious as to if this would be considered a bad practice.
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Posted by: dillon
Posted on: 2008-06-24 at 11:09:13 AM
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Depending on the particular chamber the reloaded cartridges are going into, and how hot the load is, it is quite possible to have a failure to chamber with the cases not being fully resized. We aren't as concerned with looks as we are with performance.
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Posted by: darrenjet
Posted on: 2008-06-26 at 07:27:40 AM
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That figures. I should know that when anything starts off with "not following the instructions" there is usually an opportunity for something to go wrong. I checked some of my rounds with a case guage and they won't go all the way flush, as I suspected. Even though I've not had any trouble chambering a round, I went ahead and adjusted my sizing die so that they go flush into the case gauge. Thanks.
