minimum velocity for expansion

Discussion in 'Big Stuff--7mm, 30 Cal, .338+' started by sbhooper, Mar 29, 2019.

  1. sbhooper

    sbhooper

    Joined:
    Nov 11, 2011
    Messages:
    420
    I have looked all over and Hornady is closed until Monday. Does anyone know what the minimum velocity for expansion is on the 150-grain, round nose, Interlock? The pointy ones open down to 1800, but I cannot find anywhere that says what 30-30 -type bullets open at.
     
  2. BronzeArcher

    BronzeArcher

    Joined:
    Mar 13, 2018
    Messages:
    74
    The round nose does not lower the expansion threshold significantly compared with the spitzer (pointy). You need a hollow point for that. I used to have the manual, and I've loaded and shot that bullet, but I don't recall the threshold exactly, but definitely not lower than 1600.
     
    msinc and sbhooper like this.
  3. MislMan

    MislMan Silver $$ Contributor

    Joined:
    Dec 4, 2015
    Messages:
    257
    I don’t know the answer to your query but you may want to checkout the website ‘BallisticStudies.com’ for some interesting test/discussion on 30-30 WCF Expansion, ballistics and such. Look in the Knowledge Base area.
     
  4. chrisj

    chrisj Silver $$ Contributor

    Joined:
    Apr 24, 2005
    Messages:
    290
    They will expand down to around 1200 fps. That being said... I wouldn't want impact velocity on a dear or bear with that bullet below around 1500 fps
     

Share This Page