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Old April 23, 2012, 11:55 PM   #1
Kilroy08
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Substituting primers

Right now, I have no income so my reloading hobby is limited to supplies on hand.

I've got CCI 550 primers and that's it. I started out doing loads for my .357 and picked up some 9mm dies shortly before my job went poof.

I've been itching to to some 9mm since I have nothing but free time. How much should I reduce my loads?

I'm working with Unique and when I first got the dies in I did a 10 round test batch using 4.1 grains (10% below minimum in Lyman 49) with a 125 grain Speer LRN on top. I was going to get a box of CCI 500s next paycheck, but that's not happening anytime soon. It worked fine in my Hi Power, but a little on the anemic side.

Any recommendations or advice here? I'm assuming I should stay on the lighter side of published data. This is just going to be have fun plinker ammo.

If I want something with authority, I already have some 158 grain SWCs loaded and motivated by IMR 4227 for my .357 magnum. According to Quick Load, they're sailing out there at about 1200 FPS.

But, I digress. Getting back on target here, I'm just looking to do some light target loads. It's only a 9mm, not really looking to load to Super Vel-esque proportions.
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Old April 23, 2012, 11:58 PM   #2
Mike-Mat
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If you stay to the middle or low side (which I do anyway) the magnums will work fine.

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Old April 24, 2012, 12:07 AM   #3
Kilroy08
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Cool, thank you. That's what I was figuring. I've only been doing this for a couple months and figured it would be better to ask and be good to go than just blindly blunder ahead.

Now if only I can get my little brother to quit mooching off my .357 reloads, "Hey, your getting your brass back." doesn't seem to cut it.
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Old April 24, 2012, 12:57 AM   #4
zxcvbob
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When I first started reloading, I didn't trust myself to keep SR and SP primers separate, so I use SR primers for both .30 Carbine and 9mm. They worked just fine. There's not much difference between SPM and SR primers.

Just don't substitute magnum or rifle primers for SP's in a load you've already worked up if it's anywhere near a max load. The hotter primer will cause an increase in pressure.
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Old April 24, 2012, 02:44 AM   #5
Edward429451
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I thought it was interesting to learn that magnum primers are match primers and match primers are Magnum primers. No difference here. Either Mag or match would be hotter than a standard primer and the load should be reduced accordingly.
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Old April 24, 2012, 03:55 AM   #6
MarkDozier
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Next time your brother wants to mooch tell him no problem as long as he provides the components.
brass
primers
powder
bullets

Do a 60/40 split. you get 40% and he gets 60%. If I reload for friends I do an 80/20 split. But since your brother is a mooch I think 60/40 is good.

As I am unemployed myself I want to thank my wife for supporting my habit.
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Old April 24, 2012, 06:40 AM   #7
WESHOOT2
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I found the CCI550 negatively affected accuracy in my 9mm ammo.
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