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04-24-2021, 03:17 PM
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precision delta
was wondering if anyone knows how fast you have to push the 9mm precision delta 124 grain JHP to make them expand...
Last edited by cracker57; 04-24-2021 at 03:21 PM.
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04-24-2021, 03:25 PM
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I have loaded many and tested with a chronograph, but have not tested them in ballistic media with different powder weights. What I can tell you is that I've chronographed 5 different 9mm self defense JHP loads, and they all test out in my Glock 19 at very close to 1150 ft/sec. That's the velocity I would aim for, as it seems to be how the ammo manufacturers want their JHPs loaded.
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04-24-2021, 04:24 PM
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Precision Delta hollow points might be just for target work and not expand reliably.
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04-24-2021, 06:29 PM
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Quote:
Originally Posted by Old_Cop
Precision Delta hollow points might be just for target work and not expand reliably.
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Good point, I looked for ballistic testing and didn't find any mentioned on the net.
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04-25-2021, 12:56 PM
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I shoot the Berry plated HP that is like the Hornady HAP bullet due to it
being a lither cheaper in cost, and it shots well in my pistols.
I have yet to do a exspanion test on them, since they are intended for target use, if correct?
However any bullet with enough mass and speed will do some damage
but how well is just a guess.
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04-25-2021, 01:02 PM
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I tried some a while back and my "JIC" loads didn't expand in loose packed newsprint (magazines) where my RMR and Hornady bullets did. I use 4.5 gr Universal under RMR 124 gr. JHP (roughly 1,050 fps @ 15' from my LC9s).
Last edited by mikld; 04-25-2021 at 02:51 PM.
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04-25-2021, 01:24 PM
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No one mentioned barrel lenght.
In a little 3" barrel, I found out that a.....
115 JHP needs 1115fps and a
124 JHP needs 1112fps to get a speed where the bullet works most of the time.
1050fps seems a little on the slow side for SD work, to me.......
unless you have a thin skined copper jacket or all copper ?
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04-25-2021, 09:51 PM
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I load Nosler 124 gn JHP to 1250 fps from a 4-1/4 bbl. ... have never had an occasion to observe expansion, but Nosler assures me that they will.
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04-26-2021, 09:55 AM
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Precision Delta is one of my favorite 9mm bullets, but they advertise them as "Target" bullets, not to rely on for expansion for defense. I have found them very accurate pushed by WW231.
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