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Thread: Berger .277 170gr projectiles

  1. #1
    Member
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    Berger .277 170gr projectiles

    Hey all,

    Has anyone worked with these new 170gr projectiles at all. Thinking it would be a good bullet to run in a WSM. My guess is it will definitely need a 1-9" twist though which I see very few of.

    Thoughts?

  2. #2
    Member dogmatix's Avatar
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    Dec 2011
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    I tried the 165gn .277 Matrix VLD Hunting projectiles and they also needed a faster twist than the standard 1 in 11" .270 and 270WSM barrels.
    Best I could get through my Sako was 1.34 MOA, as they were unstable, so gave up on them.

    I am thinking the Bergers would be the same.
    Welcome to Sako club.

  3. #3
    Member Bugbait's Avatar
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    It seems Berger recommend a 1 in 8" twist and with a G7 BC of 0.339 these things if are made to go fast enough look pretty interesting, now I just need to buy another rifle.

  4. #4
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    Brings about the question, where does one find a fast twist .277 barrel. If these could be pushed to 2950 ish from a wsm, it would be very interesting.
    Bugbait likes this.

  5. #5
    sneakywaza I got
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    You gotta be twist appropriate , tried 139gn hp boatails a friend swaged up specially for my 2506 and .257Wby, both on a 10 twist, unstable, worked out we needed 8, .270 the same for the heavier bullets, realistically the .277 150gn Berger and SST will kill anything we hunt out at 500yds no drama , if you are hunting Grizzlies, get a bigger gun.

  6. #6
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    I understand bullet weight / length and the required twist. What I want to know is if anyone has used these yet as I think these are getting close to 180gr 7mm performance out of a more readily available wsm case. I don't want to get into a 7mm vs 270 debate, that has been done hundreds of times. I ran a few calculations through Strelok, based on theoretical velocities and am impressed at the trajectory and the hitting power beyond 500 yards.

  7. #7
    Member Micky Duck's Avatar
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    Name:  IMG_2293.JPG
Views: 326
Size:  115.8 KBhehehehehe Ive been using 170 grn in .270 for years,no stability problems out of std case and std barrel twist...but they BIG FAT round nose speers that look like a sausage,my old mod 70 lightweight will poke them into inch group as hot as I can push them...pity I cant find anymore as they give great confidence in tight bush country.
    jakewire, tikka and Bugbait like this.

  8. #8
    Member Micky Duck's Avatar
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    oh yeah nearly forgot...Donald me old bean the .270 IS 7mmName:  IMG_2295.JPG
Views: 309
Size:  119.6 KB

  9. #9
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    As much as I like to use high BC bullets the 150gr LRAB's is the best that my Finnlite can handle. If I was to change the barrel it was be a 16" .284win running 162gr A-Max's. It should have the same speed and BC as the 270 and have a 5" shorter barrel.

 

 

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