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The Range
Ammo & Reloading
5.56x45 M855
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<blockquote data-quote="ASP785" data-source="post: 1922853" data-attributes="member: 12170"><p>I have attached a couple of photos illustrating an issue I recently had with some 2011 manufactured M855. The photos show severe bullet setback in the case upon chambering the round. There is a round of M193 shown for comparison purposes only. Fortunately for us, this caused a stoppage in the weapon. Had it fully chambered and fired the results may not have been good. The case mouth shows the typical 'grooves' associated with a case that has been crimped to a bullet's cannelure. I can only guess that the neck was not properly sized and that the crimp was not applied strong enough to fully keep the bullet in to place.</p><p></p><p><img src="https://www.okshooters.com/data/MetaMirrorCache/i1152.photobucket.com_albums_p482_Nascarrox2448_IMAG0410_zps0884b1af.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p><img src="https://www.okshooters.com/data/MetaMirrorCache/i1152.photobucket.com_albums_p482_Nascarrox2448_IMAG0411_zpsdc5a5541.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p></blockquote><p></p>
[QUOTE="ASP785, post: 1922853, member: 12170"] I have attached a couple of photos illustrating an issue I recently had with some 2011 manufactured M855. The photos show severe bullet setback in the case upon chambering the round. There is a round of M193 shown for comparison purposes only. Fortunately for us, this caused a stoppage in the weapon. Had it fully chambered and fired the results may not have been good. The case mouth shows the typical 'grooves' associated with a case that has been crimped to a bullet's cannelure. I can only guess that the neck was not properly sized and that the crimp was not applied strong enough to fully keep the bullet in to place. [IMG]https://www.okshooters.com/data/MetaMirrorCache/i1152.photobucket.com_albums_p482_Nascarrox2448_IMAG0410_zps0884b1af.jpg[/IMG] [IMG]https://www.okshooters.com/data/MetaMirrorCache/i1152.photobucket.com_albums_p482_Nascarrox2448_IMAG0411_zpsdc5a5541.jpg[/IMG] [/QUOTE]
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