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Old 02-01-2020, 10:16 PM
Acer Ace

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How long can .17 HMR be stored?



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I've got around 15K of .22LR squirrelled away, and was thinking of stocking away a few thousand .17 as well. I thought I remembered something about case necks getting brittle and cracking with age though? Thanks!
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Old 02-05-2020, 11:19 PM
tbates66
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Mine seems to be fine after 4-5 years in storage.
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Old 02-06-2020, 04:12 AM
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I don't know. I haven't seen a problem with Eley Mach II ammo yet. It's about 15 years old now. I think the cases are brittle when they are made or they are not. Stock up on the ammo as you can and don't worry if there is an occasional split in 20 years. It's not dangerous because the base will hold the pressure regardless of what the neck does. I hope to be shooting the original Eley 17 mach 2 ammo for at least another 20 years. Ammo well stored really doesn't have an expiration date. If it's not working well in 20 years it's either a bad lot to begin with or it was poorly stored. My buddy and I got some Winchester 17hmr and it's had some problems with splitting and hard primers. It's not very old at all. rc
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Old 02-07-2020, 08:16 PM
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I wouldn't worry about it. It should last just as long as any other bottle necked caliber. Brass hardens from being worked. It has different properties than pure copper.
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Old 02-07-2020, 08:56 PM
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1.5 yrs ago I shot some that was 10 yrs old with no problems.
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Old 02-12-2020, 07:04 PM
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I still have about 5000 rounds that are 7-8 years old......still perfect. All CCI
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Old 02-14-2020, 07:05 PM
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It happens. Rotate stock.
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Old 02-14-2020, 11:16 PM
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Quote:
Originally Posted by Eric Mayer View Post
It happens. Rotate stock.
And check your ammo closely. Hairline cracks are not always easy to see.
Esteemed member HUSHKABOOM has a thread about a kaboom recently in a bolt gun with a squib followed by a live one in a CZ.
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