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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Barrel Length 300 win Mag
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<blockquote data-quote="Trickymissfit" data-source="post: 657044" data-attributes="member: 25383"><p>Bart, I think we were compairing different things that come back together at another point in time. The rigidity issue also effects the barrel harmonics as you certainly point out (correctly by the way). Years back I did some rather crude experimenting with barrel pressure points and counteracting barrel harmonics. The results were an improvement, but also not as much as I'd hoped for. I now know that I was on the right track, but just in the wrong location.</p><p> </p><p>I've also learned that the diameter and weight of the barrel can also be reduced via the shape of things. This came out of trying to figure out if barrel fluting actually would add to barrel stiffness. I found that it can, but the added stiffness is so minute that it's not worth figuring into the equation (plus it creates other problems that more than counter act against them). I've no came to the conclusion that the old chrome moly barrel can be made to shoot more accurately with the proper heat treat and machine work of course. One experiment I did was with several blanks of steel that were of the same alloy number (I know it also has it's own errors with that method). I compaired 1" diameter ground 4150 steel with 1" hex, 1" octagon , and 1" ten sided bar stock that was machined. The hexagonial, octagonial, and decagonial stuff was stiffer. As in noticably stiffer. I then took the 1" round stuff and nitrided the O.D. to about .035" depth to have a 64Rc. That piece of steel was stiffer than the others</p><p>gary</p></blockquote><p></p>
[QUOTE="Trickymissfit, post: 657044, member: 25383"] Bart, I think we were compairing different things that come back together at another point in time. The rigidity issue also effects the barrel harmonics as you certainly point out (correctly by the way). Years back I did some rather crude experimenting with barrel pressure points and counteracting barrel harmonics. The results were an improvement, but also not as much as I'd hoped for. I now know that I was on the right track, but just in the wrong location. I've also learned that the diameter and weight of the barrel can also be reduced via the shape of things. This came out of trying to figure out if barrel fluting actually would add to barrel stiffness. I found that it can, but the added stiffness is so minute that it's not worth figuring into the equation (plus it creates other problems that more than counter act against them). I've no came to the conclusion that the old chrome moly barrel can be made to shoot more accurately with the proper heat treat and machine work of course. One experiment I did was with several blanks of steel that were of the same alloy number (I know it also has it's own errors with that method). I compaired 1" diameter ground 4150 steel with 1" hex, 1" octagon , and 1" ten sided bar stock that was machined. The hexagonial, octagonial, and decagonial stuff was stiffer. As in noticably stiffer. I then took the 1" round stuff and nitrided the O.D. to about .035" depth to have a 64Rc. That piece of steel was stiffer than the others gary [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Barrel Length 300 win Mag
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