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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
3 Groove Barrel ?
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<blockquote data-quote="Fiftydriver" data-source="post: 37275" data-attributes="member: 10"><p>DirtyBob1,</p><p></p><p>Certainly not my friend. I use the Lilja 3 grooves in every high performance round I build if it is my choice.</p><p></p><p>Teh main benefit of the 3 groove design is longer throat life. This is a result of the lands being thicker then a conventional land. This thicker land resists errosion much longer because there is more steel to hold together.</p><p></p><p>Think of it like this.</p><p></p><p>Imagine a room with a temp of 80 degrees with two tables in them.</p><p></p><p>One table has six ice cubes on it that are 1" square spaced evenly apart in a circle.</p><p></p><p>The other table has only three ice cubes but they are 3" square each.</p><p></p><p>It will take much longer for the three larger cubes to melt compared to the six smaller cubes simply because the larger pieces of ice will resist melting longer then the small cubes.</p><p></p><p>Same way with the 3 groove vs 6 groove rifling. The 3 groove lands have alot more metal to erode so it takes longer to erode it.</p><p></p><p>Other advantages are decreased bore fouling and bore heat(again an aid to longer barrel life). This is a result of the bullet being engraved less by the fewer sharp edges of the rifling.</p><p></p><p>And yes, they are a bit faster.</p><p></p><p>Even with conventional twists and conventional bullets, the 3 groove barrels are my choice. They will be the only barrels I fit to my AM rounds simply because they will increase throat life a measurable amount over a standard rigling count.</p><p></p><p>In my opinion, they are just as if not more useful in conventional rounds as they are in the fast twist rifles.</p><p></p><p>Good Shooting!!!</p><p></p><p>Kirby Allen(50)</p></blockquote><p></p>
[QUOTE="Fiftydriver, post: 37275, member: 10"] DirtyBob1, Certainly not my friend. I use the Lilja 3 grooves in every high performance round I build if it is my choice. Teh main benefit of the 3 groove design is longer throat life. This is a result of the lands being thicker then a conventional land. This thicker land resists errosion much longer because there is more steel to hold together. Think of it like this. Imagine a room with a temp of 80 degrees with two tables in them. One table has six ice cubes on it that are 1" square spaced evenly apart in a circle. The other table has only three ice cubes but they are 3" square each. It will take much longer for the three larger cubes to melt compared to the six smaller cubes simply because the larger pieces of ice will resist melting longer then the small cubes. Same way with the 3 groove vs 6 groove rifling. The 3 groove lands have alot more metal to erode so it takes longer to erode it. Other advantages are decreased bore fouling and bore heat(again an aid to longer barrel life). This is a result of the bullet being engraved less by the fewer sharp edges of the rifling. And yes, they are a bit faster. Even with conventional twists and conventional bullets, the 3 groove barrels are my choice. They will be the only barrels I fit to my AM rounds simply because they will increase throat life a measurable amount over a standard rigling count. In my opinion, they are just as if not more useful in conventional rounds as they are in the fast twist rifles. Good Shooting!!! Kirby Allen(50) [/QUOTE]
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3 Groove Barrel ?
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