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Rifles, Reloading, Optics, Equipment
Gunsmithing
Aluminum Barrel Nut
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<blockquote data-quote="redneckclimbing" data-source="post: 796505" data-attributes="member: 41124"><p>The main reason for barrel nutting a Rem is to loose weight in the barrel and still maintain a descent muzzle diameter. </p><p> </p><p>For example a "light Palma" contour barrel will have a shank that is approx. 1.2" for three inches. Instead of with the barrel nut just 1.06 for that same three inches and then tapering from there. Saving you a few ounces with out giving up muzzle diameter.</p><p> </p><p>The coefficeint of thermal expansion with steel and AL are quite different although these numbers are based on the temperature of the metal itself. With the steel being heated from the inside out and and that heat being disappated through the rest of the barrel and receiver steel. Within resonable proximity. Then heating the Al at any given time the temperature of the Al is going to be less. Also Al looses heat faster helping it to maintain a cooler temperature.</p><p> </p><p>I would have to do the numbers to be sure but I would think that they would almost remain at their ambient temperature dimensions even with some fairly extended firing.</p><p> </p><p>JE-</p><p> </p><p>Thinking about it a little more you could be right. You would probably only save at most an ounce (just guessing) and maybe that wouldn't be worth it. I am going to barrel nut this next Rem regardless. So, if I have time maybe I will make an Al nut and let everyone know it works.</p><p> </p><p>P.S. Has anyone actually done this before?</p></blockquote><p></p>
[QUOTE="redneckclimbing, post: 796505, member: 41124"] The main reason for barrel nutting a Rem is to loose weight in the barrel and still maintain a descent muzzle diameter. For example a "light Palma" contour barrel will have a shank that is approx. 1.2" for three inches. Instead of with the barrel nut just 1.06 for that same three inches and then tapering from there. Saving you a few ounces with out giving up muzzle diameter. The coefficeint of thermal expansion with steel and AL are quite different although these numbers are based on the temperature of the metal itself. With the steel being heated from the inside out and and that heat being disappated through the rest of the barrel and receiver steel. Within resonable proximity. Then heating the Al at any given time the temperature of the Al is going to be less. Also Al looses heat faster helping it to maintain a cooler temperature. I would have to do the numbers to be sure but I would think that they would almost remain at their ambient temperature dimensions even with some fairly extended firing. JE- Thinking about it a little more you could be right. You would probably only save at most an ounce (just guessing) and maybe that wouldn't be worth it. I am going to barrel nut this next Rem regardless. So, if I have time maybe I will make an Al nut and let everyone know it works. P.S. Has anyone actually done this before? [/QUOTE]
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Rifles, Reloading, Optics, Equipment
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Aluminum Barrel Nut
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