.300wm - .300wsm

porridgebird

Badger 338
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Jan 7, 2018
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Re: Loads for .300WM-.300WSM

anybody have a neck dia of turned (just too clean up) laoded rounds for a 300wsm i'm thinking .337, .338ish i turn my 308 to 014 and use a .333 neck dia giving a 336 loaded round... does that sound about right to you all???
Yes I use .337
 

porridgebird

Badger 338
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Minuteman
Jan 7, 2018
24
6
Re: loads for 300WSM Remington brass
62gr H4350 190gr Sierra matchking, Fed215m, Chrono 2900fps av with 4 SD. 1/12 twist Kreiger 28” barrel. Tack driver!
 

Schw15

Longrange
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  • Jul 21, 2019
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    Stupid question why does everyone seem to want to do Heavy 215-230 gr bullets over 185-190 ?? is it just wind buck or am i missing something inherent to the 300 WM ?
    The bc is better and wind. Just have to run the numbers to make sure the heavies work better
     

    DocRDS

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    Feb 21, 2012
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    Moldova
    Stupid question why does everyone seem to want to do Heavy 215-230 gr bullets over 185-190 ?? is it just wind buck or am i missing something inherent to the 300 WM ?
    Both BC and mob/crowd factor (it every caliber trending towards heavier bullets--its the new trend bby!). However in the podcast Frank often talks about backing off weight to gain some extra speed. (and also faster twist). So back off the 220s go to say 200s and try for more speed. I probably need to do some math to see what there break point is for 30 cal. I did an extrapolation once of all the bullets people were shooting at lower cals and turns out 30 cal version should be in the 200 gr range (if you scale up from 223, 6mm, 6.5, 7 etc..)

    For instance in 6.5 Creed--max weight is typicall 140-147 gr, shooting about 2700fps. By dropping to 130 grain you can get up to 2800 or 2900 fps (I'm pulling this off the top of my head, so figures could vary widely). That extra speed gives you advantage over the loss in BC.

    Its not just WM or 30 cal...everyone is humping each other to get to heavier bullets. (which generally have better bc, so its not all trendy).
     

    porridgebird

    Badger 338
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    Jan 7, 2018
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    It’s a little trendy. I use up to 200gr in 300wsm. I save my heavier lead for 300prc. Sierra has a fairly new high bc 200 gr bullet. I’ll just bought some and will post my results soon!
     

    OkieMike

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    Feb 1, 2021
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    NE Oklahoma
    Stupid question why does everyone seem to want to do Heavy 215-230 gr bullets over 185-190 ?? is it just wind buck or am i missing something inherent to the 300 WM ?
    I'm running 225's right now. Great BC, but the main reason is because that's what I can get in any appreciable quantity.

    I did the math on the 200's, 208's, 210's, 215's, etc... They all look pretty good. But it doesn't matter because I can't get enough of them to matter. Lol.

    Mike
     

    Schw15

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  • Jul 21, 2019
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    I'm running 225's right now. Great BC, but the main reason is because that's what I can get in any appreciable quantity.

    I did the math on the 200's, 208's, 210's, 215's, etc... They all look pretty good. But it doesn't matter because I can't get enough of them to matter. Lol.

    Mike
    Is that bc holding on the 225 eldm? Heard people say it was lower or seen results that were lower.
     

    Schw15

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  • Jul 21, 2019
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    I'll let you know... Just beginning to get serious with them.

    Mike
    I just started load work 300 win mag 230 a-tips looking very promising. I shot the 225 eldm a few years ago and the bc seemed to hold true but had a 1-8 twist. Seems like the 1-9 1-10 lose some