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Posted: 3/9/2004 5:22:36 PM EDT
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What effect does barrel contour have on performance? I understand about the idea of heat diffusion with different barrel weight, but what advantages does a heavy barrel have over a light profile barrel? Is it going to be more accurate, or is that a stupid assumption? This is also assuming that the 2 barrels are of the same quality and length. Thank you all in advance for your information. |
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Quoted: Is it going to be more accurate, or is that a stupid assumption? . That's a stupid assumption [;)]. Heavier barrels have one advantage over light ones - they are heavier. This helps the practical accuracy aspect of offhand shooting, but has no effect on the intrinsic accuracy of the barrel. For a semi auto field or working gun, a light barrel is the way to go. |
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"What effect does barrel contour have on performance? I understand about the idea of heat diffusion with different barrel weight, but what advantages does a heavy barrel have over a light profile barrel? Is it going to be more accurate" That's not a stupid assumption. The heavier barrel will be more rigid and thus more accurate. The only reason that is hard to apply to AR's is that most bores are chrome plated and that generally pushes accuracy to the 1/2MOA region right off the bat regardless of profile. My brother has a M4 with KAC FF RAS and it shoots 1-1.25MOA at 100yds and my fluted dissipator with KAC FF RAS will do 1/2MOA to 3/4MOA consistently. I think the flutes only hurt the accuracy (as they are improperly added post rifleing as opposed to prior to boreing.) I have seen a few 20inch chrome bored HBARS that will do 1/2MOA or less consistently but never a M4 barrel that will do that. [b]Get rid of the chrome lining and buy a higher quality cut rifled Stainless barrel from Krieger or Les Baer and you will probably see 1/4MOA accuracy.[/b] [b]CASE IN POINT HOW MANY ACCURACY TEST FIXTURES AT AMMO PLANTS USE M4 PROFILE BARRELS? Most are 2inch or larger diameter bull barrels[/b] |
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