24hourcampfire.com
Previous Thread
Next Thread
Print Thread
Hop To
Page 1 of 2 1 2
Twist question #15673867 01/18/21
Joined: Mar 2008
Posts: 4,743
J
JerradPelzer Offline OP
Campfire Guide
OP Offline
Campfire Guide
J
Joined: Mar 2008
Posts: 4,743
What twist barrel would work best for 55 and 70 grain .243 bullets. In a 6creed/243 rifle. Thanks

BP-B2

Re: Twist question [Re: JerradPelzer] #15673936 01/18/21
Joined: Feb 2010
Posts: 1,238
Jerseyboy Offline
Campfire Regular
Offline
Campfire Regular
Joined: Feb 2010
Posts: 1,238
I have a 6mm BR rifle with a 1 in 14" twist. It will stabilize 55 through 70 grain bullets very well. I picked a 14" twist as the rifle is a varmint gun and shots are under 400 yards for the most part. I would not pick that twist again. However, I would not recommend that slow a twist. I would go with a 1 in 9" twist. It's hard to over stabilize a bullet, but easy to have too slow a twist.


NRA Endowment Life Member
Re: Twist question [Re: JerradPelzer] #15674133 01/18/21
Joined: Jan 2001
Posts: 19,147
T
tikkanut Offline
Campfire Kahuna
Offline
Campfire Kahuna
T
Joined: Jan 2001
Posts: 19,147


better to over twist than under twist

with 6BR velocities...........

8-9 twist with prob no chance of spinning jackets of the bullets

Re: Twist question [Re: JerradPelzer] #15674147 01/18/21
Joined: Jan 2001
Posts: 19,147
T
tikkanut Offline
Campfire Kahuna
Offline
Campfire Kahuna
T
Joined: Jan 2001
Posts: 19,147


years ago...my 6XC 8T/3G

would spin jackets off the 75 V max

but not the 87 V

Re: Twist question [Re: tikkanut] #15674204 01/18/21
Joined: Nov 2006
Posts: 2,539
B
boatanchor Offline
Campfire Guide
Offline
Campfire Guide
B
Joined: Nov 2006
Posts: 2,539
Originally Posted by tikkanut


years ago...my 6XC 8T/3G

would spin jackets off the 75 V max

but not the 87 V


Yeah the 1-8"twist 3 groove barrels were a major debacle for me in several rifles...........never again !!!!!!!!!

As for the OP, if you are not going to shoot heavier than 70gr bullets.........1-12" twist 4,5 or 6groove barrel

IC-A

Re: Twist question [Re: JerradPelzer] #15674304 01/18/21
Joined: Mar 2008
Posts: 4,743
J
JerradPelzer Offline OP
Campfire Guide
OP Offline
Campfire Guide
J
Joined: Mar 2008
Posts: 4,743
I picked up a Howa 1500 6creed from a member on here and thinking it’s a 7.5 twist. I may pick up a Tikka 243 for the kids and not 100% sure but kinda thought they were 10 twist. Just looking at what bullets I have and what I’m finding in stock. I thought loading some 55-70gr for this summer for prairie dogs (mainly use the 22’s and 17’s)

Didn’t know if that 7.5 would work at all with the 70’s

Re: Twist question [Re: JerradPelzer] #15674750 01/18/21
Joined: Jan 2008
Posts: 681
R
rayporter Offline
Campfire Regular
Offline
Campfire Regular
R
Joined: Jan 2008
Posts: 681
the 55 ballistic tips do real good in an 8 twist.

Re: Twist question [Re: JerradPelzer] #15674760 01/18/21
Joined: Jan 2008
Posts: 681
R
rayporter Offline
Campfire Regular
Offline
Campfire Regular
R
Joined: Jan 2008
Posts: 681
the 55 ballistic tips do real good in an 8 twist.

Re: Twist question [Re: JerradPelzer] #15676494 01/19/21
Joined: Jul 2013
Posts: 8,373
H
HuntnShoot Offline
Campfire Outfitter
Offline
Campfire Outfitter
H
Joined: Jul 2013
Posts: 8,373
If you're sticking to the 55-70gr bullet weight range, a 1:14 is the best twist. It will be too slow for most bullets heavier than 75 grains.

The best way to pick a twist rate is to consider the longest, heaviest bullet you will ever shoot, and pick the optimum twist for that bullet. All the lighter, shorter bullets will shoot just fine in nearly all cases.


I belong on eroding granite, among the pines.
Re: Twist question [Re: JerradPelzer] #15677757 01/19/21
Joined: Feb 2009
Posts: 6,273
hasbeen1945 Offline
Campfire Tracker
Offline
Campfire Tracker
Joined: Feb 2009
Posts: 6,273
I built a 243 with a 1in 12 twist. Worked great with 70 grain bullets. Never tried anything smaller. Hasbeen

Last edited by hasbeen1945; 01/19/21.

hasbeen
(Better a has been than a never was!)

NRA Patron member
Try to live your life where the preacher doesn't have to lie at your funeral
IC-B

Re: Twist question [Re: JerradPelzer] #15677791 01/19/21
Joined: Dec 2007
Posts: 13,930
aalf Offline
Campfire 'Bwana
Offline
Campfire 'Bwana
Joined: Dec 2007
Posts: 13,930

14" twist with 70 BT's in a 6x47 Lapua......

[Linked Image from i.imgur.com]

Re: Twist question [Re: JerradPelzer] #15678257 01/19/21
Joined: Dec 2006
Posts: 3,505
L
liliysdad Offline
Campfire Guide
Offline
Campfire Guide
L
Joined: Dec 2006
Posts: 3,505
I would do an 8, or I wouldn't do a .243....of course, I would rather shoot 70s from a .22 than a .24.

Re: Twist question [Re: JerradPelzer] #15678432 01/19/21
Joined: Jul 2004
Posts: 5,319
Son_of_the_Gael Online Content
Campfire Tracker
Online Content
Campfire Tracker
Joined: Jul 2004
Posts: 5,319
Why would you limit yourself with a 14" twist? You might want to shoot a longer bullet some day.

Not being intentionally snarky, just don't understand the reasoning.


"If you have a 7x57, there are a bunch of other chamberings you don't need." - denton


"Jimmy, some of it's magic,
Some of it's tragic,
But I had a good life all the way."
(Jimmy Buffet)

SotG
Re: Twist question [Re: Son_of_the_Gael] #15678733 01/19/21
Joined: Dec 2006
Posts: 3,505
L
liliysdad Offline
Campfire Guide
Offline
Campfire Guide
L
Joined: Dec 2006
Posts: 3,505
Originally Posted by Son_of_the_Gael
Why would you limit yourself with a 14" twist? You might want to shoot a longer bullet some day.

Not being intentionally snarky, just don't understand the reasoning.



I am of the same opinion...

Re: Twist question [Re: Son_of_the_Gael] #15678855 01/19/21
Joined: Jul 2013
Posts: 8,373
H
HuntnShoot Offline
Campfire Outfitter
Offline
Campfire Outfitter
H
Joined: Jul 2013
Posts: 8,373
Originally Posted by Son_of_the_Gael
Why would you limit yourself with a 14" twist? You might want to shoot a longer bullet some day.

Not being intentionally snarky, just don't understand the reasoning.

My dad shot bench rest rifles at targets and varmints for many years toward the end of his life. He used 6mm rifles and small 6mm cartridges and 1:14 twist barrels, using bullets from 60-75 grains. Some guys just want to shoot the light bullets. If that's the case, a 14-twist is the best twist. He shot lots of .1's.

Why would he do that??


I belong on eroding granite, among the pines.
Re: Twist question [Re: Son_of_the_Gael] #15682244 01/20/21
Joined: May 2011
Posts: 12,049
O
OSU_Sig Offline
Campfire 'Bwana
Offline
Campfire 'Bwana
O
Joined: May 2011
Posts: 12,049
Originally Posted by Son_of_the_Gael
Why would you limit yourself with a 14" twist? You might want to shoot a longer bullet some day.

Not being intentionally snarky, just don't understand the reasoning.

You prevented me from asking the same question. Never say never.


Shoot low Sheriff, they're riding shetlands.

There wasn't a need for fact checkers until the truth started getting out.

Re: Twist question [Re: HuntnShoot] #15682480 01/20/21
Joined: Nov 2008
Posts: 5,223
Swifty52 Offline
Campfire Tracker
Offline
Campfire Tracker
Joined: Nov 2008
Posts: 5,223
Originally Posted by HuntnShoot
If you're sticking to the 55-70gr bullet weight range, a 1:14 is the best twist. It will be too slow for most bullets heavier than 75 grains.

The best way to pick a twist rate is to consider the longest, heaviest bullet you will ever shoot, and pick the optimum twist for that bullet. All the lighter, shorter bullets will shoot just fine in nearly all cases.


^^^^^This. Short and simple. BTDT multiple times.



Swifty
Re: Twist question [Re: JerradPelzer] #15683363 01/20/21
Joined: Dec 2007
Posts: 13,930
aalf Offline
Campfire 'Bwana
Offline
Campfire 'Bwana
Joined: Dec 2007
Posts: 13,930

Food for thought......

In my 6x47 Lapua switch barrel, comparing the 70 grain BT load in the 14" twist, to the 105 Berger load in the 8" twist, they run neck & neck to 550 yards, before the Berger starts taking over.

Re: Twist question [Re: aalf] #15683415 01/20/21
Joined: Mar 2016
Posts: 1,807
I
ISRO Offline
Campfire Ranger
Offline
Campfire Ranger
I
Joined: Mar 2016
Posts: 1,807
Originally Posted by aalf

Food for thought......

In my 6x47 Lapua, comparing the 70 grain BT load to the 105 Berger load, they run neck & neck to 550 yards, before the Berger starts taking over.



[Linked Image from media.giphy.com]

Re: Twist question [Re: HuntnShoot] #15690521 01/22/21
Joined: Mar 2006
Posts: 12,022
Jordan Smith Offline
Campfire 'Bwana
Offline
Campfire 'Bwana
Joined: Mar 2006
Posts: 12,022
Originally Posted by HuntnShoot
Originally Posted by Son_of_the_Gael
Why would you limit yourself with a 14" twist? You might want to shoot a longer bullet some day.

Not being intentionally snarky, just don't understand the reasoning.

My dad shot bench rest rifles at targets and varmints for many years toward the end of his life. He used 6mm rifles and small 6mm cartridges and 1:14 twist barrels, using bullets from 60-75 grains. Some guys just want to shoot the light bullets. If that's the case, a 14-twist is the best twist. He shot lots of .1's.

Why would he do that??

Faster rotation causes greater precession and nutation when asymmetries exist in the bullet. This was especially important in decades passed, as bullets were not balanced as well as they are today. With the quality of today's bullets, the negative impact of faster twist on precision is not nearly as large as it used to be. Bullets still aren't perfect, so for BR purposes an excessively fast twist might be a hindrance, but for the rest of us there is no downside to a faster-than-needed rate of twist.

Page 1 of 2 1 2

Moderated by  RickBin, SYSOP 

RR1
Who's Online Now
355 registered members (10gaugemag, 1_deuce, 1beaver_shooter, 01Foreman400, 257heaven, 16penny, 51 invisible), 953 guests, and 548 spiders.
Key: Admin, Global Mod, Mod
RR2/3




END RIGHT 300x250 AD TAG ZONE B5 -->






Fish & Game Departments | Solunar Tables | Mission Statement | Privacy Policy | Contact Us | DMCA
Hunting | Fishing | Camping | Backpacking | Reloading | Campfire Forums | Gear Shop
Copyright © 2000-2020 24hourcampfire.com, Inc. All Rights Reserved.
 
Powered by UBB.threads™ PHP Forum Software 7.7.3
(Release build 20190728)
PHP: 7.3.27 Page Time: 0.043s Queries: 15 (0.003s) Memory: 0.8869 MB (Peak: 1.0476 MB) Data Comp: Zlib Server Time: 2021-02-28 06:28:52 UTC
Valid HTML 5 and Valid CSS