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Rifles, Reloading, Optics, Equipment
AR15/10 Rifles
COL for AR15 using a Mic?
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<blockquote data-quote="Kevin Thomas" data-source="post: 593289" data-attributes="member: 15748"><p>Hey Mike,</p><p> </p><p>You got it, and that's a biggie right there; no neck sizing, ever, under any circumstances in an AR. Or any gas gun, for that matter. It's nothing but trouble looking for a place to happen, and I assure you, it'll find that place. AR's really aren't that fussy to load for, as are, say, an M1 or an M14. The gas system in the AR family is a lot more durable, and far less subject to port presure issues than the Garand family, which can be damaged by improper powder selection. No damage in an AR, just poor performance with some combinations. Choose a powder that's well suited to the bullet weights you're using, and it'll run like a turpentined cat. I generally tend to use more 77s and 82s than anything else (I'm a High Power Service Rifle shooter) and these get either Varget or N140. RL-15 works very well, too. If you're going to a lighter bullet, say the 55s or thereabouts, try something a bit faster like H322, N135 or the like.</p><p> </p><p>Make sure you're pushing the shoulders back .003"-.004" to provide adequate clearance for cycling, and make sure your primers are seated slightly below the case head. Contrary to what you may hear, there's generally no reason to crimp with an AR, so long as you've got adequate neck tension. Should try crimping in bullets that don't present a cannelure anyway. You might pop over to the relaoding section on usrifleteams.com and read through some of the threads dealing with reloading for ARs. There's also a couple pieces pinned in that section that deal with Service Rifle reloading that may be worth your time. One is a reprint of the section I did for the Sierra manual some time back, but it's still mostly relevant. That, and don't hesitate to ask questions here as need be! <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile :)" loading="lazy" data-shortname=":)" /></p></blockquote><p></p>
[QUOTE="Kevin Thomas, post: 593289, member: 15748"] Hey Mike, You got it, and that's a biggie right there; no neck sizing, ever, under any circumstances in an AR. Or any gas gun, for that matter. It's nothing but trouble looking for a place to happen, and I assure you, it'll find that place. AR's really aren't that fussy to load for, as are, say, an M1 or an M14. The gas system in the AR family is a lot more durable, and far less subject to port presure issues than the Garand family, which can be damaged by improper powder selection. No damage in an AR, just poor performance with some combinations. Choose a powder that's well suited to the bullet weights you're using, and it'll run like a turpentined cat. I generally tend to use more 77s and 82s than anything else (I'm a High Power Service Rifle shooter) and these get either Varget or N140. RL-15 works very well, too. If you're going to a lighter bullet, say the 55s or thereabouts, try something a bit faster like H322, N135 or the like. Make sure you're pushing the shoulders back .003"-.004" to provide adequate clearance for cycling, and make sure your primers are seated slightly below the case head. Contrary to what you may hear, there's generally no reason to crimp with an AR, so long as you've got adequate neck tension. Should try crimping in bullets that don't present a cannelure anyway. You might pop over to the relaoding section on usrifleteams.com and read through some of the threads dealing with reloading for ARs. There's also a couple pieces pinned in that section that deal with Service Rifle reloading that may be worth your time. One is a reprint of the section I did for the Sierra manual some time back, but it's still mostly relevant. That, and don't hesitate to ask questions here as need be! :) [/QUOTE]
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AR15/10 Rifles
COL for AR15 using a Mic?
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