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Old April 10th, 2019, 05:56 PM #11
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Quote:
Originally Posted by Blacksmith101 View Post
Lots of people shoot 50+ year old milsurp ammo today.........will you want to shoot 50 year old plastic cases?
The plastic casings are expected to last longer than brass in terms of storage
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Old April 10th, 2019, 07:24 PM #12
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Wondering about the loading and recycle value. With the amount expended in conflict leaving something the bad guys can’t reuse (as easily) would have a benefit.
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Old April 10th, 2019, 07:29 PM #13
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Quote:
Originally Posted by solarpower44 View Post
The plastic casings are expected to last longer than brass in terms of storage
Yep, plastic injection is not what most folks think it is, even more so in todays manufacturing world.
20 years ago I also shot thousands of "Natac" Polymer 5.56 rounds through a few Colts in semi, burst and auto with zero case failures.
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Old April 10th, 2019, 07:31 PM #14
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Originally Posted by solarpower44 View Post
The plastic casings are expected to last longer than brass in terms of storage
Wonder why this matters. Sure we used the 45 acp for a long time. 30-06 pretty long. 7.62 is still in use but with improved bullets. They are chomping at the bit to replace the 223 and it's seen a few upgrades in bullets. Years ago they talked about a Styrofoam case that disintegratesupon firing. The liberals about had a melt down.
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Old April 12th, 2019, 03:00 PM #15
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Someone has to say it: "It's not plastic it's Polymer!" Okee dokee! I don't own a plastic pistol, but I'm not against them.

No, it's not a new idea, but it's been waiting for the plastic technology to get there and market acceptance to make it profitable. That didn't take too long with shotgun shells. Well, except for some grumpy old Trapshooters.

I'm wondering if it will require a new method of sizing necks such as heated dies to reform the neck for tension or perhaps a sealant glue instead of resizing.

Reloading forums will have a new set of repetitive newbie posts i.e. "Can i glue or melt my split neck?"
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Old April 12th, 2019, 03:57 PM #16
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K-43 is correct. Below is a polymer case.
Boxer primed.
While polishing the brass I noticed the polymer body can be rotated 360 degrees. I would think powder gasses would leak from the cartridge.
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Old April 13th, 2019, 01:15 AM #17
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better be some tough plastic to stand up to 60,000+psi. I'm not shooting it. I think you will see caseless before plastic
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Old April 13th, 2019, 06:24 AM #18
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Quote:
Originally Posted by solarpower44 View Post
The plastic casings are expected to last longer than brass in terms of storage
And CDs/DVDs were supposed to last 50 years in storage. Predictions didn't quite live up to reality.
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Old April 13th, 2019, 08:21 AM #19
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I thought one of the ideas behind trying polymer cases was to discourage the pickup of cases for reloading. Scenario: military engages enemy, leaves spent cases all over the place, enemy picks them up, reloads them, and fights back. Looking around, the other claim I saw was it was 30% less weight. But, I also found this:

https://www.thefirearmblog.com/blog/...-ammo-warning/
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Old April 13th, 2019, 10:02 AM #20
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Plastic AK food, can also be used as fishing lures.
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