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Old 01-24-2011, 10:00 PM   #1
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Default Pierced primers

Don't know if this is the right place for this, but ...Went to the range today with my Ruger Blackhawk 9mm/.357 convertible. Shot .38 reloads, no problem, but about half of the .357 reloads exhibited a pierced primer.

I was using 158 gr jhp over 7.4 grs of Herco. Primers were Remington small pistol 1 1/2. Had similar problems using the same bullet over 10.0 grs of Blue Dot and Magtec 1 1/2 SP primers.

Loads DO NOT call for mag. primers, and are from the most current Lee manual.

Could it be the pistol, a weak spring maybe? My primer choice? The load? Thanks for any input!



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Old 01-24-2011, 10:26 PM   #2
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Since you are at the bottom of the range for loading with those powders, im thinking its a primer issue.



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Old 01-25-2011, 12:28 AM   #3
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Have the same pistol and have shot all types of load variations in 38/357/9mm and never had that problem,but I have never used Rem. primers. CCI,Fed,Win. and Wolf have all worked fine.

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Old 01-25-2011, 12:33 AM   #4
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are you getting lead shavings in and around the forcing cone area??

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Old 01-25-2011, 01:02 AM   #5
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Check w/ Remington. While your manual may not call for it, I THINK Remington reccomends their 5 1/2 SPP for .357 Mags. The 1 1/2 is thinner, and can "flow" under 357 pressures.

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Old 01-25-2011, 01:28 AM   #6
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Thank you for the responses. This pistol is relatively new to me, so I'm still trying to figure it out

No, I'm not seeing lead shavings at the forcing cone. Checked the firing pin, and it looks, and feels, smooth. Springs are stock, as far as I know. A couple things that I haven't done is try some commercial .357 loads, and I haven't used these loads in another revolver. BTW, haven't had problems with 9mm.

I'll check with Remington. Also have some Winchester and wolf primers, I'll see if they do the trick.

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Old 01-25-2011, 09:36 PM   #7
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Alliant shows 10.2 gr of Blue Dot to be max. They call for a Magnum primer. I am guessing it is the relatively thin primers.

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Old 01-25-2011, 10:27 PM   #8
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I think it is the primers are not for 357 mag pressures is all. You loads look ok to me.

For Herco I show 7.8 to 9.5 load range

For Bluedot I show 11.6 to 12.6 (Your a little low and this bring in's different problems). My manual is the Sierra 5th edition.

So take that into account as well.

My book uses CCI -550 primers for all 357 mag loads.

http://www.handloads.com/misc/primers.asp

Every thing I am seeing on the web says 1.5 remmys have a thin cup and can't handle the pressures of the 357 mag.

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Old 01-25-2011, 10:35 PM   #9
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Quote:
Originally Posted by cpttango30 View Post
I think it is the primers are not for 357 mag pressures is all. You loads look ok to me.

For Herco I show 7.8 to 9.5 load range

For Bluedot I show 11.6 to 12.6 (Your a little low and this bring in's different problems). My manual is the Sierra 5th edition.
Lee 2nd Ed. shows-

7.4-8.2 Herco,
9.9-10.7 BD
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Old 01-26-2011, 12:02 PM   #10
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Quote:
Originally Posted by cpttango30 View Post
I think it is the primers are not for 357 mag pressures is all. You loads look ok to me.

For Herco I show 7.8 to 9.5 load range

For Bluedot I show 11.6 to 12.6 (Your a little low and this bring in's different problems). My manual is the Sierra 5th edition.

So take that into account as well.

My book uses CCI -550 primers for all 357 mag loads.

Primer cross reference chart

Every thing I am seeing on the web says 1.5 remmys have a thin cup and can't handle the pressures of the 357 mag.
BTW, just geting into reloading.

I'm surprised to see such a large variation in loads between books.

Yeah, looks like I made a wrong choice in primers. also, looks like Magtec 1 1/2s should be considered similar to the Rem.s.

Thank you again for the info.


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