Can 5.56x45 brass be necked up to 357?

2017-04-25T15:15:27Z

To use in an AR. .223/5.56 brass has been successfully necked up and down for years, from .17 Remington to .30 Blackout, Whisper, etc...

2017-04-25T18:30:34Z

How can so many have completely missed the point? Or are you all just yankin' my chain?

2017-05-02T02:46:04Z

.357 is the diameter of a bullet, nothing to do with case dimensions,.

2017-05-02T02:54:44Z

Most of you are limited, ignorant. I'm sorry I asked.

2017-05-02T03:02:12Z

How difficult would it be to modify my AR boltface to accomodate a rimmed handgun cartridge?

2017-06-06T02:55:39Z

Impossible.

2017-07-06T22:34:05Z

Ever hear of a Win 351sl in a 1907 semi-auto rifle?

2017-07-06T22:34:27Z

Ever hear of a Win 351sl in a 1907 semi-auto rifle?

2017-07-06T22:35:10Z

Ever hear of a Win 351sl in a 1907 semi-auto rifle?

Amy2017-09-25T11:59:17Z

5.56 rim diameter is .378.

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Domenic2017-05-26T17:46:19Z

5.56 rim diameter is .378.
.357 rim diameter is .440.

Necking up is not the only issue.

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Grace2017-05-20T03:25:41Z

5.56 rim diameter is .378.
.357 rim diameter is .440.

Necking up is not the only issue.

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USAFisnumber12017-05-02T05:01:06Z

No....

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John de Witt2017-04-24T03:02:49Z

It would be essentially straight-walled, with no shoulder for headspacing. Sure, you could, but it's hard to figure a reason for doing so.

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