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What's Wrong With .30 Caliber? By Bryan Litz
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<blockquote data-quote="Kevin Thomas" data-source="post: 291557" data-attributes="member: 15748"><p>Jono,</p><p> </p><p>All due respect to Bryan, but yes, the load sounds a bit warm. A muzzle velocity of 2,650 isn't too fast for a .308, until you start talking about a 20" barrel. Just watch your pressure signs, to include primer appearance (they'll lie to you, too!) bolt lift and extraction ease, case life and primer pocket tightness, etc.. If any of these shows up, I'd drop that load back by at least a grain or so and re-evaluate. You might also take a look at some of the Vihtavuori 500 series high-energy powders as another way to boost velocity a bit while dodging some of the pressure problems. I'd suggest the N540 or possible N550 as good prospects. </p><p> </p><p>Varget's a great powder in the .308, but yeah, your load sounds a bit warm to me . . . two eyes, ten fingers, no replacements, you know?</p><p> </p><p>Kevin Thomas</p></blockquote><p></p>
[QUOTE="Kevin Thomas, post: 291557, member: 15748"] Jono, All due respect to Bryan, but yes, the load sounds a bit warm. A muzzle velocity of 2,650 isn't too fast for a .308, until you start talking about a 20" barrel. Just watch your pressure signs, to include primer appearance (they'll lie to you, too!) bolt lift and extraction ease, case life and primer pocket tightness, etc.. If any of these shows up, I'd drop that load back by at least a grain or so and re-evaluate. You might also take a look at some of the Vihtavuori 500 series high-energy powders as another way to boost velocity a bit while dodging some of the pressure problems. I'd suggest the N540 or possible N550 as good prospects. Varget's a great powder in the .308, but yeah, your load sounds a bit warm to me . . . two eyes, ten fingers, no replacements, you know? Kevin Thomas [/QUOTE]
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What's Wrong With .30 Caliber? By Bryan Litz
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