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Old 05-04-2018, 05:22 PM
50150me 50150me is offline
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Fiocchi 45 auto ammo question? Fiocchi 45 auto ammo question? Fiocchi 45 auto ammo question? Fiocchi 45 auto ammo question? Fiocchi 45 auto ammo question?  
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Default Fiocchi 45 auto ammo question?

I have been keeping my magazine full of Fiocchi 45 230 gr FMJ (out of the box) in my Colt Combat Elite MK 4 Series 80, when I carry. I change out this magazine with bullets when I use other magazines with practice reloads. I just noticed that the first 2 bullets in this carry magazine that I load and reload in the pistol have shortened from 1.255" to 1.190".
It is obvious that the continued cycling has shorted bullet, they must not be crimped that tite from the factory.
Question is: has anyone found this before? Will it harm anything?
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Old 05-04-2018, 05:41 PM
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I have had it happen with carry ammo I have extracted from the gun to change to target stuff. Two things can happen. 1. you might get a dab more pressure but probably not enough to worry about. 2. It might not feed right if you need it. Me, I dont worry to much about #2 as I always put that round in the chamber directly or; put it in the magazine, chamber the round, then top the mag back off.
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Old 05-04-2018, 05:42 PM
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I believe factory crimps are pretty well calculated and applied. Mistakes can be made, of course.
I think you can find that any cartridge will suffer this kind of setback if cycled often. I make a point of shuffling them when I change between carry and practice loads. Seems to work for me.
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Old 05-05-2018, 11:33 AM
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In another thread, I stated that when I go to the range, I regularly shoot a magazine of my carry ammo. This keeps my inventory of carry ammo fresh. It also keeps me familiar with the feel of it, since my practice ammo consists of reloads that are slightly lighter.
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Old 05-05-2018, 11:51 AM
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There are varying opinions about this, of course, but I've read from multiple sources that recycling ammo (i.e., loading it into the chamber from the magazine, then ejecting it, and loading it again from the magazine) can result in bullet setback, which can cause increased pressure, which may result in a kaboom. This is especially more apt to happen if you recycle the same round multiple times. What I do is when I need to eject a chambered round, I put it a range ammo box, and don't reuse it except at the range. I do look at it and visually compare it to other new rounds, to see if there is any visual difference (I don't have a micrometer) but there shouldn't be at that point. I've been told (and read) that the two causes of bullet setback are repeated impact with the ramp, and recoil. I have a hard time understanding recoil, because each round in the magazine is subject to recoil as the pistol is fired...you'd think if that is really the case, the bottom round in the magazine would be subject to multiple forces and be at most risk for setback. Of course, the recoil impact may be more at the top of the magazine, where the recoil impulse is more directly in line with the next round in the magazine.

I never put a round directly in the chamber, because of potential damage to the extractor. There are varying opinions on this as well, and in fact I watched a gun smith do exactly that, at my LGS. I asked him about it, and he said it wasn't such a problem with external extractors, since they pivot out, but it's not good with internal extractors. I just don't do it, even with guns with external extractors, to avoid the potential of damage.

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Old 05-05-2018, 12:05 PM
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Quote:
Originally Posted by 50150me View Post
I have been keeping my magazine full of Fiocchi 45 230 gr FMJ (out of the box) in my Colt Combat Elite MK 4 Series 80, when I carry. I change out this magazine with bullets when I use other magazines with practice reloads. I just noticed that the first 2 bullets in this carry magazine that I load and reload in the pistol have shortened from 1.255" to 1.190".
It is obvious that the continued cycling has shorted bullet, they must not be crimped that tite from the factory.
Question is: has anyone found this before? Will it harm anything?
It's fairly common with any brand ....not just Fiocchi. A 45 acp bullet smacks the feed ramp rather smartly, done repeatedly it will get driven back.
Us old dogs learned a long time ago to keep an eye on those repeatedly chambered rounds. My practice was to use the loaded magazine ammo in practice at the range rather than to keep cycling them over and over. When done all the ammo in the magazine was fresh.
Military loaded ammo was fairly resistant to the repeated setback....but that ammo had sealant around the bullet and a crimp.
Just watch any ammo that has hit the feed ramp more than twice.
Gary

Last edited by gwpercle; 05-05-2018 at 12:08 PM.
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Old 05-19-2018, 01:43 AM
mscampbell2734 mscampbell2734 is offline
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I read of an incident several years ago where a SWAT officer had a failure to fire on a raid. When it was all over the department sent the officer's weapon and ammo to the FBI for a detailed examination.

Turns out the officer had repeatedly loaded the same two rounds and over time the primer compound had shaken lose and come out of the primer in the round in the chamber.
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