338 Ultra and light bullets

Discussion in 'Rifles, Bullets, Barrels & Ballistics' started by Mike375, Feb 2, 2002.

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  1. Mike375

    Mike375 Active Member

    Nov 3, 2001
    A 10 twist in 338 is real quick, about the same pitch as 1 in8 in 270 and 1 in 9 in 30.

    How do think the 338 Ultra with this twist would be at long range with 180 and 200 grain bullets.

    While my experience is limited in this area, a general observation I have made is that 300 Win with 1 in 10 seems to give more than normal windrift when shot with light bullets, 125s and 130s.

    What do you think.

  2. Darryl Cassel

    Darryl Cassel Well-Known Member

    May 7, 2001

    Usually the purpose of going to the 338 for LongRange is to use the heavier and higher BC bullet to do so.
    The lighter 338s and the lighter 30s both have very LOW BCs to reach out at longer distances and maintain good velocity and hit WITH ATHORITY. Even the 250 Gr in the 338 has a BC only in the .5s.

    The 10 twist will work and is recommended for the 338, A 9 twist is recommended for the 240 Gr 30 cal But, the 10 Twist works just fine.
    I use the 10 Twist myself in the 338 when using the 300 gr bullets and the same twist in the 240 Gr 30 Cal. ----works fine.

    Darryl Cassel

    [ 02-03-2002: Message edited by: Darryl Cassel ]