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Thread: 270 in a 20in barrel or 308 in 18in barrel

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  1. #13
    Member Micky Duck's Avatar
    Join Date
    Apr 2015
    Location
    Geraldine
    Posts
    25,416
    OK I will bite.
    IF you can launch the 165 at 2700fps you will have 1414ftlbs at 400 and 1190 at 500
    a 150 launched at2800 is plurry near identicle figures

    now a .4515 calibre 240grn projectile leaving muzzle at 900fps has 432ftlbs energy AT MUZZLE....412ftlbs at 25 yards
    even launched at 1600fps it only just makes ..oops nope it doesnt it only has1364ftlbs at muzzle and 1191 at 25yards.

    the mighty .270w
    if you launch a 140grn at 3000fps(which many claim to do)has 1545ftlbs at 400 and1312ftlbs at 500 yards.
    if you launch a 150grn at 2800fps....................................has 1450ftlbs '' " " 1235 " " " "

    so the factory 145grn superpreformance will more than likely sit in the middle

    best you stop using the .44 magnum if you BELIEVE its unethical......

    stones,glasshouses etc etc etc
    Moa Hunter and dannyb like this.
    75/15/10 black powder matters

 

 

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