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9x19mm case length in inches

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Old 12-17-2012, 12:05 PM   #11
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Me personally, I trim all brass. I figure that the best way to stay in the routine. With pistol brass, I just make sure that my 9mm brass is trimmed to the "trim to" length that is in most manuals, which is .750. If its under that then no worries, over that then it trims it down a bit, to make sure it doesn't get squeezed in the chamber.

Saying that though, I have found that most of my 9mm brass does not get trimmed, as most of it is under the .750 trim to length. I feel better myself in ensuring that it is under the spec max case length though. Just my .02.
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Old 12-17-2012, 12:13 PM   #12
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I don't measure or trim .45acp, 9mm, .40s&w, or .38spcl.

I don't measure much .45Colt, .44mag, or .357mag. I only check those when I'm going near max with H-110 and a uniform roll crimp is more important.
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Old 12-17-2012, 08:21 PM   #13
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OK, I reload a lot of 10mm....9mm, not nearly as much. The pressure difference is only 2500psi according to the book. In the real world, who knows what the difference is as the 10 is loaded to max. I don't like taking the chance of that 24lb spring helping the slide seat the bullet deeper causing a pressure issue. Small chance of it happening but there is still a chance. If everything is trimmed the same, crimped the same, then everything is consistent. This also helps when trouble shooting a malfunction as you can rule it out. The 9mm probably doesn't run quite the risk but it's consistent. OCD or just good reloading practice?

I admit, sitting down and trimming 1k cases blows the goat but, I only have to do it once with that particular batch of brass. For me, it's about being consistent with all of my reloads.
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