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Thread: reloading 308 win

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  1. 16-05-2017, 02:07 PM #11
    steven
    steven is offline
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    Quote Originally Posted by 264 Luvr View Post
    Perhaps I am on something also, but WTF does "eTGTs behind a HBC" mean in English, can someone translate this code for me please.
    Sorry, etgts = electronic targets. The ones in New Zealand from Silver mountain targets only work with a projectile that is still supersonic. HBC is one of several 308w 155gr match grade HPBT's used. It has a secant ogive I think making its seating depth picky but its slippery. So to be still Supersonic at 1000yds you want about 1250fps, if using a HBC projectile 45.5gr of ADI 2208 is about right. The Nossler match with the same load will have dropped about 120fps+ so usually fails to register.
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