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Thread: compressed loads

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  1. #21
    Member silentscope's Avatar
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    Jan 2013
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    Quote Originally Posted by 257weatherby View Post
    Sako .270 Shortmag, 24" barrel, Norma cases, 150 Berger VLD, 62gn2213, fed 210, 20thou off :3050fps average, maybe a powder change before trying compression.

    The term "compression" is a little misleading, all you are really doing is reducing the air space between grains, vibration of the case to settle the powder is useful, as is a drop tube - if you were to actually compress the powder charge to beyond 100%, the granules would fracture exposing the explosive charge under the coating, the coating controls the rate of burn, if enough fracturing occurred, you would have a dangerous situation indeed!

    If 150 grain pills at 3k is not enough for you, maybe you have the wrong calibre, you are not going to get a great deal more, and another 100fps will not make a significant difference in 600yd drop, velocity or striking energy. Worth noting that a .308 load of 46gns 2208 under a 165 SST doing 2700fps, will drop animals at 600yds if you can shoot at that distance.
    yes i dont want to start making grenades haha, shooting that distance is no issue but im worried my bullets will start lacking in hitting power, and also i am trying to see if it will shoot a bit flatter for futher as my scope dosent dial as high as most due to its zero stop pin. if a i know for sure it has more energy than a 308 at that range. just ideas i want to try i guess.

 

 

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