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Pressure signs on first 9mm major loads?


andersonj55126

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I am starting to work up loads for 9mm major for the first time using HS-6, MG 115/124 JHP and win SRP. I have a kkm 5" barrel without poppel holes.

I am a little concerned about primer flattening. Here are some attached pictures take a look and let me know what you think.

Length 1.165 or 1.170

I am using Lee u-die and Lee FCD.

124gr

post-40280-0-32148500-1385487670_thumb.j

post-40280-0-67567900-1385487690_thumb.j

115gr

post-40280-0-69034000-1385487711_thumb.j

post-40280-0-21615100-1385487730_thumb.j

Edited by andersonj55126
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Most look good to me, about like mine. I use/have used both of those loads. My MG 124 load is 8.1 HS-6 and my MG 115 load is 8.6 HS-6 (KKM barrel, 1.165). The Blazer in the 176 PF group is really flat though and the WCC in the 169 group looks pretty flat also but the others look pretty decent to me. I've shot at least 25K of either of these combinations over the past few years.

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I would sort out all the WCC brass. It is all NATO brass and has a thicker wall, which sounds good but it reduces the volume and increases pressure, and probably explains why that prime looks flatter. Some of the newer WCC brass has the same wall thickness as regular winchester brass but the older stuff is definitely thicker so I just sorry out all of it and use it for minor loads.

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I am starting to work up loads for 9mm major for the first time using HS-6, MG 115/124 JHP and win SRP. I have a kkm 5" barrel without poppel holes.

I am a little concerned about primer flattening. Here are some attached pictures take a look and let me know what you think.

Length 1.165 or 1.170

I am using Lee u-die and Lee FCD.

124gr

attachicon.gif9mm_brass_124_1.jpg

attachicon.gif9mm_brass_124_2.jpg

115gr

attachicon.gif9mm_brass_115_1.jpg

attachicon.gif9mm_brass_115_2.jpg

Look pretty good to me. :roflol: You aint seen flat yet. Is it possible to load 9Major without signs that would make the codgers in the Glock Talk/THR/1911 etc. reloading forum stroke out?

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