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Posted: 9/13/2014 7:15:29 PM EDT
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I've seen this come up a couple times lately, and was loading 9mm today, so I ran some of these to test over the chrono.
Load: Xtreme 147gr .357" plated VV N320 3.3gr CCI SPP 1.140" OAL Results: Winchester brass 893 fps AVG 131 P.F. AMMOLOAD brass 908 fps AVG 133 P.F. I don't sort my brass, and just load all 9mm cases that I have from the same jug. I hadn't spotted any AMMOLOAD before, but these have been cycled through my rotation over the last couple years. The ones I found today, I ran through my 650 with the rest, and pulled them out separate to test. This is my standard competition load for 9mm minor. The test pistol was a CZ SP01 Shadow. This is a pretty light load, not sure what the results would be on something pushing towards max. Just thought this might be helpful to guys who are wondering about this brass. |
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Quoted:
Was the only issue that everyone was having with the brass was the raised portion on the inside or were there other issues with the brass as well? That was the only thing I ever read. I loaded a few of them a few different times before I noticed the ridge in there. I've never had one break on me. |
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Quoted: Is it "AMMOLAND" or "AMMOLOAD" brass? Answer in first post.
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Quoted:
I'm an idiot, it is AMMOLOAD. I edited my title and post. These had the ridge inside, same as the post that Dryflash linked. I also measured to see if my bullet would bottom out on that ridge, but there was a good .030" gap there, and the 147 is pretty long.] That's why I just don't believe that the ridge is to prevent setback as some have speculated. Seems more likely it'sdesigned to reinforce the area of the casing tthat is most likely to fail when fired from a barrel with poor chamber support |
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Quoted:
That's why I just don't believe that the ridge is to prevent setback as some have speculated. Seems more likely it'sdesigned to reinforce the area of the casing tthat is most likely to fail when fired from a barrel with poor chamber support I agree with this evaluation. Vince |
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That's why I just don't believe that the ridge is to prevent setback as some have speculated. Seems more likely it'sdesigned to reinforce the area of the casing tthat is most likely to fail when fired from a barrel with poor chamber support I have to agree with this. Relating to issues of liability for commercial manufacturers, they probably have visual inspection processes that would recognize and kick out cartridges produced with extreme setback while cartridges which are somehow overcharged would be impossible to recognize once bullets are seated. The thicker base might help to protect users and their guns against kabooms from these unrecognized overcharges. |
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