Long Range Hunting Online Magazine

Go Back   Long Range Hunting Online Magazine > Rifles, Reloading, Optics, Equipment > Rifles, Bullets, Barrels & Ballistics

Rifles, Bullets, Barrels & Ballistics Applied Ballistics


Barrel Twist vs. Bullet Weight

LinkBack Thread Tools Display Modes
Unread 01-13-2007, 09:23 AM
Silver Member
Join Date: Jan 2007
Location: Scottsdale, AZ
Posts: 113
Barrel Twist vs. Bullet Weight

<font color="blue">I have a 300 WM with a Douglas Premium XX Air-Gauged barrel with a 1/10 twist – intending to shoot 200g bullets. A close friend suggests that 180g bullets are the ‘optimum’ 30-caliber bullet (a subjective opinion to say the least).

My question is, will the faster 1/10 twist of my barrel degrade the accuracy of a 180g bullet by spinning it ‘too fast’. If so, what is the logic behind that?

Looking forward to some interesting answers.</font>
Reply With Quote
  •   #2  
    Unread 01-13-2007, 10:09 AM
    Platinum Member
    Join Date: Jul 2004
    Location: Texas
    Posts: 7,001
    Re: Barrel Twist vs. Bullet Weight


    You would have to reach 3400 to 3500 fps before over
    rotation would occur.

    A 1 in 10 twist is very good in a 300win mag and will
    shoot the 220gr bullets well also.

    I have only had this problem once ,And it was a 32" 1in9 twist barreled 7STW with 120gr bullets exceeding 3800fps
    accuracy started going away at around 3700fps.

    You should be fine with 150 to 240 gr bullets, and your
    rifle will tell you which one it likes best.

    As the ausies say NO WORRIES MATE
    "PRESS ON"
    Reply With Quote

    Unread 01-13-2007, 01:31 PM
    Platinum Member
    Join Date: Nov 2005
    Location: Riggins Idaho
    Posts: 1,195
    Re: Barrel Twist vs. Bullet Weight

    The 180 gr. ballistic tip is good along with the 200gr. accubond and the 210 berger. The 180gr bullet is not the only way to go but will work fine
    I dont know who ever came up with the imaganary word of "Over Gunned"
    Reply With Quote
    Unread 01-13-2007, 02:33 PM
    Platinum Member
    Join Date: Feb 2004
    Location: Pennsyltucky
    Posts: 2,630
    Re: Barrel Twist vs. Bullet Weight

    Karl, i would be willing to bet that your best accuracy will happen with the 200-220 gr bullets.

    JD, the accuracy starting to deteriorate after 3700 was probably more a problem with the bullet not being able to take the RPM's from a structural standpoint and not an over rotating stabilization issue.
    Reply With Quote


    Thread Tools
    Display Modes

    Similar Threads for: Barrel Twist vs. Bullet Weight
    Thread Thread Starter Forum Replies Last Post
    Bullet weight for barrel twist- 7mm CLICKBANGBANG Rifles, Bullets, Barrels & Ballistics 1 12-07-2010 12:49 PM
    Best Bullet Weight for 12 Twist 300 WSM? ovastafford Rifles, Bullets, Barrels & Ballistics 2 11-16-2010 09:09 PM
    Optimum Bullet weight for 1:10 twist scsims Rifles, Bullets, Barrels & Ballistics 12 11-16-2010 07:31 PM
    1:9 twist max bullet weight 223? manhoer Rifles, Bullets, Barrels & Ballistics 3 11-26-2009 06:17 AM
    Barrel twist v. bullet weight blackco Rifles, Bullets, Barrels & Ballistics 8 09-21-2007 10:37 PM

    All times are GMT -5. The time now is 05:38 PM.

    Powered by vBulletin ©2000 - 2017, Jelsoft Enterprises Ltd.
    Content Management Powered by vBadvanced CMPS
    All content ©2010-2015 Long Range Hunting, LLC