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Thread: 308 vs. 7.5x55

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    gcp
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    308 vs. 7.5x55

    Hiya folks, last Friday I purchased a Remington 700 5R and while reloading for it I started comparing the 308 load to my trusty 7.5x55 Swiss. What's your opinion on how the two loads compare? Pros, cons?

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    Re: 308 vs. 7.5x55

    Ballistically they will be pretty much identical.

    .308Win: Higher peak operating pressure.
    7.5x55: Lower peak operating pressure but more case capacity.

    The 7.5x55mm case is VERY similar to a .284Win case necked up to .308". As a matter of fact, many used to do just that to get reloadable 7.5x55 cases (before they became easily available).

    If you chambered a modern bolt action in 7.5x55 (with higher pressures), should run like a 30/06.
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    Re: 308 vs. 7.5x55

    I use 284 brass in the 7.5, and that costs money.
    Mounting a scope on a K31 is problematic.

    I have plenty of 308 brass lying around.
    I have plenty of 308s with scope mounts.
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    gcp
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    Re: 308 vs. 7.5x55

    It's not problematic to mount a scope or diopters on a K31, you just have to know where to look. But the above not withstanding, is convenience the only major reason to go with 308?


    More pics at http://smg.photobucket.com/albums/0703/George/5R/

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    Re: 308 vs. 7.5x55

    Both are very similar in performance as laoded. But 7.5 can be loaded to hiher velocities in a more modern action.

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    gcp
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    Re: 308 vs. 7.5x55

    Sergeant, you're dead on, QuickLOAD graphs indicate exactly that. I'll have shooting comparisons between the two platforms as soon as I am able to reload & shoot both with similar loads. The 7.5x55 has long been my favorite but the accuracy of my new 5R has surely attracted me to the 308.