Reply
Go Back   TexasBowhunter.com Community Discussion Forums > Topics > Around the Campfire
 
Thread Tools Display Modes
Old 04-21-2017, 01:39 PM   #1
Pushbutton2
Pope & Young
 
Pushbutton2's Avatar
 
Join Date: Feb 2013
Location: Van,TX
Hunt In: Mc Culloch County since 2015 Van Zandt County since 2017
Default Barrel Length vs twist rate

I searched for twist rate and couldn't seem to find an answer.

Here's my question.
1:8 = one twist (revolution) in 8" of barrel.
So a 16" barrel has 2 revolutions before bullet exits barrel.
8" barrel has 1
12" barrel 1.5 revolutions.

Is it the 1:8 or revolutions that stabilize the bullet or the revolutions before exiting barrel?

If all three fired identical ammo is any one inherently more accurate than the other?

Last edited by Pushbutton2; 04-21-2017 at 01:49 PM..
Pushbutton2 is online now   Reply With Quote Back To The Top
Old 04-21-2017, 01:50 PM   #2
Outbreaker
Ten Point
 
Join Date: Mar 2007
Default

The 1:8 sets the angular velocity/momentum that will then stabilized the bullet.

All will have different accuracy not due to stabilization but due to different harmonic nodes based on barrel oscillation.

Faster the twist=more angular velocity/momentum=more spin drift.

Basic physics.
Outbreaker is online now   Reply With Quote Back To The Top
Old 04-21-2017, 01:56 PM   #3
muzzlebrake
Pope & Young
 
muzzlebrake's Avatar
 
Join Date: Sep 2008
Location: Euless, Texas
Hunt In: Sterling County
Default

I don't know but maybe Sheldon Cooper does
muzzlebrake is offline   Reply With Quote Back To The Top
Old 04-21-2017, 04:38 PM   #4
TxNurse
Ten Point
 
TxNurse's Avatar
 
Join Date: Sep 2011
Location: San Angelo, TX
Hunt In: Southern Nolan County
Default

Not based on the RPM's, assuming all exit at same velocity. Bullet will have the same RPM's out of a 8 inch barrel as a 36 inch 1:8 barrel. Of course identical ammo would have different accuracy, velocity, etc. if fired from different length barrels.
TxNurse is offline   Reply With Quote Back To The Top
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -5. The time now is 08:28 PM.


Powered by vBulletin® Version 3.8.1
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.
Copyright 1999-2012, TexasBowhunter.com