Left hand twist barrels?
- Thread starter muleman69
- Start date
DngBat7
Silver $$ Contributor
Because your trigger finger pulls gun to right, so left twist is suppose to balance it out. Not sure I believe it myself
muleman69
USMC -1st marine Div. RVN
So in reality a right twist would tend to pull right along with your trigger finger. Be interesting to no how much a left twist would overcome this force? I no a heavy rifle and lite trigger etc.etc.would have to make a big difference as well.
DngBat7
Silver $$ Contributor
That is exactly what I was told by a barrel maker.
muleman69
USMC -1st marine Div. RVN
I have read quite q few post in different forms and a lot of things were brought up but no real conclusions that I could see
I have a left tw Chanlyn 7mm barrel in Saum, supposedly you can flop this chart over and it will be correct, it is for right tw barrels. I have found it to be close.
On the trigger pull thing, I'd work on it before ordering a left tw barrel. I've yet to take a LR shot where I could claim that the earths spin did anything to my bullet.
butchlambert
Site $$ Sponsor
Winter time is setting in!
I believe the British found it was less prone to coriolis effect for long range volley firing. The advantage was very slight but it was there. That was the reason for the Lee-Enfield switching after the Boer War.
Seems to me with a left twist barrel, as the bullet impacts the lands and is forced to twist left the barrel will want to twist right. Equal and opposite reactions.
Yup, winter is getting close.
Yup, winter is getting close.
butchlambert
Site $$ Sponsor
Yes, but their entire weaponry, tactics and Musketry changed as a result. They got beat up pretty bad in that war and it was only superiority in numbers that prevailed.
moondog
Gold $$ Contributor
I own and shoot mostly left twist Chanlynn barrels. Mostly cause that's what he does and he makes damn good barrels.
The "other" forum has made claims of the virtue of left twist being correct in this
Hemisphere. Everybody over there jumps on that theory and has to have a left gain twist
or be left with inferior, incorrect tubes.
I'm calling it B.S. What I find in my game is if your shooting with a group of guys (PMS
style) if your shooting left and everyone else is shooting right or vs versus. In a 90* wind, your hold WILL be different.
What? I thought I kind of said the same thing, flop the chart. That PMS crowd a tough bunch, I get the same interaction with the little woman.
muleman69
USMC -1st marine Div. RVN
Thats a cool chart
As has been pointed out.....the spin drift will be opposite of a RH twist barrel.
Can it help counter the coriolis effect? I will say yes but I will say even the top shooters shooting at a 1k yards will be hard pressed to tell the difference.
Pope the very late great barrel maker would never make a RH twist barrel. He said the southpaw shooters can suffer! His claim was that a LH twist barrel for a RH shooter will torque the gun into the shooter and the shooter will control the rifle better. Remember when he was in his prime of barrel making it was common for a off hand rifle to be chambered in calibers like .38-55, .32-40, .40-63. A normal bullet weight for a .40 was like 330 grains. Even at blackpowder cartridge velocities that will have a lot of recoil in a 10# off hand rifle.
Myself being a LH shooter and have shot primarily RH twist barrels....One time at the range and not thinking of it I was shooting a 1917 Enfield and a 1903 Springfield. The Enfield has LH twist rifling and of course the 1903 is RH twist. Both guns in .30-06 in there original military configuration. When I went from one gun to the next at first I couldn’t figure out why they felt totally different then it dawned on me. The Enfield was actually torquing away from my cheek. I can feel the difference.
Will it make a difference in calibers and torque like a 6mm, 6.5mm or even a standard .308win.? Probably not.
We’ve made LH twist barrels for some bench shooters who have said with they’re stock set up etc...the rifle recoiled more in a straight line and seemed more controllable. Off hand I think this is hard to prove. Too many variables in stock designs,
Barrel weights, contours and calibers etc... but if it works for you then to me it’s up to each individual shooter and what they think and feel. Part of our game is in our head.
You would have to run some sort of a controlled test in my opinion to come to a accurate conclusion.
In most popular calibers we will make LH twist barrels at no extra charge.
Later, Frank
Bartlein Barrels
Can it help counter the coriolis effect? I will say yes but I will say even the top shooters shooting at a 1k yards will be hard pressed to tell the difference.
Pope the very late great barrel maker would never make a RH twist barrel. He said the southpaw shooters can suffer! His claim was that a LH twist barrel for a RH shooter will torque the gun into the shooter and the shooter will control the rifle better. Remember when he was in his prime of barrel making it was common for a off hand rifle to be chambered in calibers like .38-55, .32-40, .40-63. A normal bullet weight for a .40 was like 330 grains. Even at blackpowder cartridge velocities that will have a lot of recoil in a 10# off hand rifle.
Myself being a LH shooter and have shot primarily RH twist barrels....One time at the range and not thinking of it I was shooting a 1917 Enfield and a 1903 Springfield. The Enfield has LH twist rifling and of course the 1903 is RH twist. Both guns in .30-06 in there original military configuration. When I went from one gun to the next at first I couldn’t figure out why they felt totally different then it dawned on me. The Enfield was actually torquing away from my cheek. I can feel the difference.
Will it make a difference in calibers and torque like a 6mm, 6.5mm or even a standard .308win.? Probably not.
We’ve made LH twist barrels for some bench shooters who have said with they’re stock set up etc...the rifle recoiled more in a straight line and seemed more controllable. Off hand I think this is hard to prove. Too many variables in stock designs,
Barrel weights, contours and calibers etc... but if it works for you then to me it’s up to each individual shooter and what they think and feel. Part of our game is in our head.
You would have to run some sort of a controlled test in my opinion to come to a accurate conclusion.
In most popular calibers we will make LH twist barrels at no extra charge.
Later, Frank
Bartlein Barrels
muleman69
USMC -1st marine Div. RVN
Thank you, very informative for sure
There are forum members Down under. Any experience or opinions?
Long range math people?
Long range math people?
Tim Singleton
Gold $$ Contributor
It seems to me like I have had a hard time dealing with a stiff left to right green flag push. I just can’t get a tune that doesn’t seem to move twice as far as a red condition of the same intensity
Is it in my imagination? I don’t think so at 100-200 yards it seems the right twist barrel will move more with the wind from left to right
Is it in my imagination? I don’t think so at 100-200 yards it seems the right twist barrel will move more with the wind from left to right
Upgrades & Donations
This Forum's expenses are primarily paid by member contributions. You can upgrade your Forum membership in seconds. Gold and Silver members get unlimited FREE classifieds for one year. Gold members can upload custom avatars.
Click Upgrade Membership Button ABOVE to get Gold or Silver Status.
You can also donate any amount, large or small, with the button below. Include your Forum Name in the PayPal Notes field.
To DONATE by CHECK, or make a recurring donation, CLICK HERE to learn how.
Click Upgrade Membership Button ABOVE to get Gold or Silver Status.
You can also donate any amount, large or small, with the button below. Include your Forum Name in the PayPal Notes field.
To DONATE by CHECK, or make a recurring donation, CLICK HERE to learn how.