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Rifles, Reloading, Optics, Equipment
Reloading
Reloading 5.56
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<blockquote data-quote="MudRunner2005" data-source="post: 826190" data-attributes="member: 12995"><p>Hit the nail on the head... More often than not, you will need to use a Small-Base (SB) die for .223/5.56 for proper cycling in automatic rifles.</p><p> </p><p></p><p>Also correct, the thicker heavier cases of the 5.56 stamped brass (also always has the NATO hallmark on the headstamp) create greater chamber pressures therefore are a little bit "hotter" of a round than the standard .223 Rem loads. Also, the 5.56 chambers are throated longer to accept the longer profile military projectiles, vs the civilian .223 projectiles. The longer 5.56 bullets can get jammed in the rifling and can get stuck in the barrel when the case is extracted, causing serious issues. Which is why you can shoot 5.56 & .223 out of a gun with a barrel stamped 5.56 on it. But you are not recommended to shoot 5.56 out of a barrel stamped .223 on it.</p><p> </p><p>I reload for my M6A1, and I use the RCBS 5.56/.223 SB (Small Base) die set. It works just fine for me. Zero cycling issues.</p></blockquote><p></p>
[QUOTE="MudRunner2005, post: 826190, member: 12995"] Hit the nail on the head... More often than not, you will need to use a Small-Base (SB) die for .223/5.56 for proper cycling in automatic rifles. Also correct, the thicker heavier cases of the 5.56 stamped brass (also always has the NATO hallmark on the headstamp) create greater chamber pressures therefore are a little bit "hotter" of a round than the standard .223 Rem loads. Also, the 5.56 chambers are throated longer to accept the longer profile military projectiles, vs the civilian .223 projectiles. The longer 5.56 bullets can get jammed in the rifling and can get stuck in the barrel when the case is extracted, causing serious issues. Which is why you can shoot 5.56 & .223 out of a gun with a barrel stamped 5.56 on it. But you are not recommended to shoot 5.56 out of a barrel stamped .223 on it. I reload for my M6A1, and I use the RCBS 5.56/.223 SB (Small Base) die set. It works just fine for me. Zero cycling issues. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Reloading 5.56
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