Dang 357 loads too hot... - Page 2 - Graybeard Outdoors
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post #11 of 33 (permalink) Old 02-04-2017, 05:35 PM Thread Starter
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I just realized you are saying SR. These are magnums. Are you saying load my mag cases with SR primers?

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post #12 of 33 (permalink) Old 02-04-2017, 05:35 PM
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[QUOTE=ulav8r;2054898633]The one on the right looks like the firing pin is a loose fit in the hole. It's a receiver issue, not a barrel issue.[/QUOTE

The left one looks pierced, the right looks cratered bad.

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post #13 of 33 (permalink) Old 02-04-2017, 07:15 PM
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Quote:
Originally Posted by Joe S. View Post
I just realized you are saying SR. These are magnums. Are you saying load my mag cases with SR primers?
Rifle primers are thicker, less likely to crater or be pierced.

Real trucks dont have spark plugs.
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post #14 of 33 (permalink) Old 02-04-2017, 07:25 PM
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Even SPM primers are only as thick as the thinnest SR primers, so yes, use small rifle primers with the thicker cups, Rem 7 are my choice.

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post #15 of 33 (permalink) Old 02-04-2017, 08:18 PM
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Primers alone are a poor choice to check the pressure of a given load...

How much case head expansion was observed? Was case harder to extract? Was recoil more? Was the noise louder?

As stated, looks to me more like a larger FP hole.

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post #16 of 33 (permalink) Old 02-04-2017, 09:06 PM
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I have had that problem of a pierced primer before also, fixed by going to SR primers. The primers do not look flattened- so does not really look like excessive pressure as the sole culprit.
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post #17 of 33 (permalink) Old 02-04-2017, 09:13 PM Thread Starter
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Quote:
How much case head expansion was observed?
It was a little expanded but not real bad. Went into sizing die easy enough. Would not go into my 357 Blackhawk though.

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Was case harder to extract?
Not at all.

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Was recoil more? Was the noise louder?
No more than in any other 357.

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post #18 of 33 (permalink) Old 02-04-2017, 09:18 PM
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It was a little expanded but not real bad. Went into sizing die easy enough. Would not go into my 357 Blackhawk though.

Not at all.

No more than in any other 357.
Than I would surmise its not too hot a loading. Change primers and lower charge 10% and work back up.

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post #19 of 33 (permalink) Old 02-04-2017, 09:40 PM
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Also possibility is loads worked up for a maxi maybe too much for a standard 357 chambering. Essentially, the difference in length of the maxi chamber acts as a freebore for the standard 357 case.This is how Weatherby gets the velocities is does without pressure overages,even tho they are extremely high
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post #20 of 33 (permalink) Old 02-04-2017, 10:09 PM Thread Starter
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That makes sense.

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