Anyone shooting a 7-300wsm

Discussion in 'Rifles, Bullets, Barrels & Ballistics' started by blackaj, Jun 21, 2018.

  1. blackaj

    blackaj Well-Known Member

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    I've been thinking about replacing my 28 nosler barrel with a more mild but capable 7mm, I've considered just going 7 rem mag but the 7-300 wsm might be more efficient with less recoil... plus there's no belt.
    Looking to shoot 180's at or above 2950 without a brake, any feedback on the 7-300/270 wsm would be great.
    Seems like it would be super simple running 270 wsm cases through a 7mm mandrel, and that brass is cheap and plentiful.
     
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  2. nbowlin

    nbowlin Well-Known Member

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    Last edited: Jun 22, 2018
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  3. blackaj

    blackaj Well-Known Member

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    Thanks for the input and brass recommendation,
    I've considered the 7WSM but read a lot about the short neck being an issue with long heavies, even accuracy problems...
    That and I'm tired of being held hostage to a single expensive brass source, if necking up 270 WSM brass can get me close to the performance of the 7WSM then I would rather go that route.
    I would certainly like some feedback on the two though.
     
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  4. nbowlin

    nbowlin Well-Known Member

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    Typically a decent set of dies will handle any run out issues. Hornady makes a concentricity gauge.

    If a guy is in a pinch prior to Bertram I would buy fusion loaded ammo and pull it down. On sale they are under a buck a piece.

    I ran 175’s to just under 3200 out of a 26” 8t. We had some sort of “allergic” Reaction to any other bullet.
    It is now a 6.5-7wsm moving 150’s in the low 3300’s

    Either way good luck to you.
     
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  5. JohnnieB

    JohnnieB Well-Known Member

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    I've got a collection of 7WSM's and am quite pleased with the round. You can simply neck up or neck down 270 or 300 WSM brass and it will work just fine, but you will have to fireform the case as the 7WSM has a slightly larger case. That's what I do running all Norma brass in all my WSM's from 6.5 - 325. I've never had a problem with the shorter neck of the 7 having any issues. I typically run my 180's at 2900 - 2950 with a 26" barrel. Recoil with unbraked rifles is not an issue.
     
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  6. thatguyshm

    thatguyshm Well-Known Member

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    Just curious, how would recoil be less? Or do you mean less with lower velocity from the 28?
     
  7. blackaj

    blackaj Well-Known Member

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    i m
    I mean less case capacity than the 7 rem and therefore less powder, usually this results in less recoil
     
  8. blackaj

    blackaj Well-Known Member

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    Yeah I've thought about the fire forming method but again if a 7-300wsm comes close to the same performance then why bother fire forming?
    What I'm hoping to learn is how close the performance would be to the straight 7WSM
     
  9. JohnnieB

    JohnnieB Well-Known Member

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    Simple. Because brass for the 7 can be hard to find. And... I really like Norma brass!
     
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  10. thatguyshm

    thatguyshm Well-Known Member

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    Not entirely sure that's how it works.. same powders pushing the same bullet the same speed will generally be the same recoil. The mental game can tell you its less but with all things being equal it will be the same recoil. In physics class when we touched on Newton's laws, my instructor would actually use a firearm's recoil as an example for equal and opposite reactions.
     
  11. blackaj

    blackaj Well-Known Member

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    Ok so going back to the original post...
    Does anyone have experience with a 7-300wsm????
     
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  12. sable tireur

    sable tireur Well-Known Member

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    I've owned and shot a 7mm-300 WSM since late 2001 when Winchester released the 300 WSM. Like everyone else, it was an opportunity to neck it down and neck it up to try alternatives on the same case. Everyone looks for that golden chalice of perfection.;)
    We even chambered several rifles for the then newly released 7mm WSM with the shorter neck. Performance was very nearly the same when you take into account that the barrels all might be slightly different. But, and here's the big difference:

    It is slightly easier to control the neck tension and the concentricity on the 300 WSM case AND currently there are better options for brass selection when using the 300 WSM. The 7mm WSM cases can be difficult to source even with the huge number of online retailers selling brass. Winchester has become stingy with the release of brass over the last few years.

    I happen to prefer the 7mm-300 WSM for the brass selection. The shorter neck on the 7mm WSM didn't really bother me as I have seen examples of shorter necks being extremely accurate:

    [​IMG]

    For hunting, I've standardized on the Berger 180 gr. Hunter VLD over a maximum load of Re-25. This is an extremely accurate combination in my rifles and is suitable for hunting elk if that opportunity presents itself to the members. This load is comparable to the information found on Hodgdon's reloading website although I'm running just a tad faster...:D

    I forgot to add this thread:

    https://www.longrangehunting.com/threads/7wsm-or-7mm-300wsm.44947/

    And this shows the difference in neck length:

    [​IMG]
    Regards.
     
    Last edited: Jun 23, 2018
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  13. Rhovee

    Rhovee Well-Known Member

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    If you neck up the neck gets shorter. Neck down and it gets longer. I would do a 7-300wsm. There are lots of brass options and the 300 wsm seems a lot more popular that the 270wsm so brass will be around longer. To be honest, a 7 saum is known for being a very accurate and can easily achieve the velocities your after. It can be done with H1000 or RL26. Norma is currently out of brass but there are coming back on the market soon. ADG is also coming out with brass this summer. I am having a 7 saum built now with about .230 freebore for the 180 eldm. Coal is around 3.1. The smith had his shooting 2930 FPS with 180VLD using H1000 and shooting 3” groups at 1k
     
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  14. blackaj

    blackaj Well-Known Member

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    Thank you very much for the useful information!
    Could you please tell me your velocity with the 180's and the barrel length.