284 freebore

Discussion in 'Big Stuff--7mm, 30 Cal, .338+' started by buddy.223, Jan 23, 2019.

  1. buddy.223

    buddy.223

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    rebarreling a 284 win to shoot the 180g hornady eld m, my smith has a suitable reamer with a 220 fb would this be enough to get the best from this bullet bullet .
     
  2. ShootDots

    ShootDots Gold $$ Contributor

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    I do not know about the 7mm ELDM, however, I do know about the 6.5 / 147 ELDM.. The 147 could use about a .300 freebore, thus negating the use of ANY other 6.5 projectile! If the 7mm ELDM is anything like the 6.5, you will need A LOT more freebore than a .220! From the ELDMs I have seen, they have such a L-O-N-G bearing surface that they are basically a telephone pole with a tiny boattail and a point! You better get some good info before you chamber that barrel or you will be using a 180 Berger Hybrid..
     
    Last edited: Jan 23, 2019
  3. 6mmcldasher

    6mmcldasher Silver $$ Contributor

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    My chamber has a .225 fb , the shank on the 180 eld is right at the neck shoulder junction . I don't have donuts so they worked fine . You may want a bit longer FB.
     
  4. AROKHUNTER

    AROKHUNTER Gold $$ Contributor

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    I have read that a .250 freebore is desirable for that bullet. I have no
    experience with it myself though.
     
    Last edited: Feb 11, 2019
  5. gilmillan1

    gilmillan1

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    A 225 is not enough. You need more than that.
     
  6. dougridgeore

    dougridgeore

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    In my opinion/(lots of testing) the 162 ELD-M’s have grouped better than the 180’s when shooting in our weekly 600 yard match
    They will work with 220 freebore and the bearing surface will stay above the donut/junction of shoulder and neck
     
  7. swd

    swd Gold $$ Contributor

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    Would .275” be too much for a reamer to shoot all the heavies? (f Class bullets) I don’t have an issue with the bullet seating half way down the neck.
     
    Last edited: Jan 23, 2019
  8. ShootDots

    ShootDots Gold $$ Contributor

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    With a .275-280 freebore, you can shoot the 180 Scenars and the 195 Elite Hunter. For "awhile" you can shoot the Berger 180 Hybrid and the 184 Hybrid>>> Once the throat erodes far enough you will be "stuck" with the 180 Scenars and the 195s. However, the 195s need a straight 8 or at most a 8.25...
     
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  9. buddy.223

    buddy.223

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    thanks for replies, any more input on the eld s would be helpful - living in the uk i was lucky to get real bargain on 1000+ 180 s so hence the question
     
  10. JBT

    JBT Gold $$ Contributor

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    I would have it chambered for the Berger 180 or 184 Hybrids rather than the Hornady bullets. But that’s just my opinion.

    But I understand if you already have a lot of the Hornady bullets.
     
  11. dskogman

    dskogman Silver $$ Contributor

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    If you use Norma brass donuts are not a problem. I shot quite a few a while back with less fb than that. They shot great 99.9% of the time. It’s the 0.1% when they disappear that’s the problem.
     
  12. Elwood

    Elwood

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    Don't be frightened of the .275 freebore. I run two 284's on .290 and .300 freebore. Both were done for the Berger 7mm 195's but they didn't work, so I went back to 7mm 180 gr Hybrids.
    1000 rounds on and the both rifles (7/270WSM) are still shooting the Hybrids. You might need a little bit more neck tension and you most certainly will need a bit more powder.
     
    Last edited: Jan 25, 2019
  13. Kurt Blasser

    Kurt Blasser Silver $$ Contributor

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    What freebore is needed to run straight 284 with Berger 180 VLD's or 180 Hybrid BT?
     
  14. Kurt Blasser

    Kurt Blasser Silver $$ Contributor

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    Is there a particular reamer that is used for the Berger 180 VLD's, or 180 Hybrids?
     

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