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Hunting
Long Range Hunting & Shooting
Short-barreled .30-06 LRH load
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<blockquote data-quote="Hugnot" data-source="post: 2955543" data-attributes="member: 115658"><p>Select a powder that has "flash suppressant", SW4350 gets about 2700 with 190's & 54 gr SW4350. Data does not state barrel length & velocities are about 2700 @ 60K psi with 54 gr SW4350 in a 20-inch barrel. Double based powders may yield more speed.</p><p></p><p>Powder is burned within 2-3 inches of barrel but expanding gas has less bullet push duration in shorter barrels. Just guessing - 25 fps loss per inch from 24 to 20-inch barrel. I have had problems with W760/H414 at temperatures over 85 F. Flash caused by powder gas being exposed to air that continues combustion.</p><p></p><p>Powder availability - if it is not available why consider it? I like SW4350, my LGS has it & it has a wide spectrum of use from .22-.250 to .300 WM. SW4350 is less dense than most ball powders but fits well in .30-06 and other similar capacity cartridges with moderate heavy to diameter bullets. Good fit inside these cartridges.</p></blockquote><p></p>
[QUOTE="Hugnot, post: 2955543, member: 115658"] Select a powder that has "flash suppressant", SW4350 gets about 2700 with 190's & 54 gr SW4350. Data does not state barrel length & velocities are about 2700 @ 60K psi with 54 gr SW4350 in a 20-inch barrel. Double based powders may yield more speed. Powder is burned within 2-3 inches of barrel but expanding gas has less bullet push duration in shorter barrels. Just guessing - 25 fps loss per inch from 24 to 20-inch barrel. I have had problems with W760/H414 at temperatures over 85 F. Flash caused by powder gas being exposed to air that continues combustion. Powder availability - if it is not available why consider it? I like SW4350, my LGS has it & it has a wide spectrum of use from .22-.250 to .300 WM. SW4350 is less dense than most ball powders but fits well in .30-06 and other similar capacity cartridges with moderate heavy to diameter bullets. Good fit inside these cartridges. [/QUOTE]
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Short-barreled .30-06 LRH load
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