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Temp. Sensetive

7.62x397.62x39 Member Posts: 1,994 ✭✭✭✭✭
edited August 2006 in Perry Shooter Competition Shooting and Reloading Forum
Is H-308 in a .308 a very tempeture sensetive powder?
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Comments

  • temblortemblor Member Posts: 2,153 ✭✭✭✭✭
    edited November -1
    Are you sure it's H-308 ?? Or do you mean H380 ?
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  • 7.62x397.62x39 Member Posts: 1,994 ✭✭✭✭✭
    edited November -1
    Oh sorry, typo there, yes H-380
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  • temblortemblor Member Posts: 2,153 ✭✭✭✭✭
    edited November -1
    H380 is an older type spherical(ball)powder (not one of the newer Hodgdon Extreme powders) and is more temp. sensitive than the newer "extreme" ones.
    That being said, I don't think it is any more sensitive than other ball powders like W748, H335, H414, BL-C(2), etc.
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  • FrancFFrancF Member Posts: 35,279 ✭✭✭
    edited November -1
    Love H-380 for my 22-250 and I have seen a few Rem 700's fall victim to the powder on very hot days shooting 200+ rounds Varmint hunting. However they were near or at max loads using mag primers.

    In short, The charges were near redline to begin with, then add heat a hot chamber, and theres the mix for a bad day. The cure is if you use a hot primer, back the powder off at least 1/2 grain or more.
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