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Posted: 1/1/2015 5:41:46 PM EDT
| I'm looking at 18in barrels for my build and see two interesting options available but not in the same barrel. You can either get a barrel with polygonal rifling or a special chamber cut capable of shooting 7.62 NATO & .308 WIN rounds with accuracy. Is one feature better to have over the other? |
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BHW makes some good offerings with Polygonal bores and with 308B chambers that will handle
both the .308 Winchester and 7.62x51mm NATO rounds... I would go with the 20" barrel length personally, with a rifle gas system in a medium weight contour/profile to get the most out of the round... Good luck. |
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Quoted:
I'm looking at 18in barrels for my build and see two interesting options available but not in the same barrel. You can either get a barrel with polygonal rifling or a special chamber cut capable of shooting 7.62 NATO & .308 WIN rounds with accuracy. Is one feature better to have over the other? Are you talking about Rainier? They have the Select which has 5R rifling and a 1:11" twist. Their Match is a "special" chamber to handle both, but it has standard 6 groove rifling and a 1:10" twist. I went with the select. Any .308 chambered rifle can handle 7.62x51mm NATO. I like the 5R rifling and the twist rate much more, plus it is supposedly a couple ounces lighter. In addition, it is guaranteed sub-moa just like the Match and it is much cheaper. No brainer for me. |
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