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View Full Version : Rifeling a myth?


slim and shady
10-11-2007, 07:18 PM
We all know that a revelutionary breakthrough came for guns with the introduction of rifling, in effect, creating the modern day rifle. The rifling effect created a spin on the projectile causing it to be more accurate, now for paintball accuracy is determined by paint to bore size (i know that that is an effect to with older style guns such as the musket) so my question to you all is: The few paintball barrels that have rifling, do they help increase accuracy at all, or is it a myth?

Thank you in advance to any and all who post.

CKvBP
10-11-2007, 08:15 PM
lacking any real world experience in this but...

I'm going to venture that it is a myth do to:
1. lack of mass in the paintball
2. lack of kinetic energy in a paintball
3. 1+2 = minimal gyroscopic effect.
4. Rifling was only truly effective when the Minié ball (I.E. bullet shaped bullet) was introduced.
5. rifling often (but not always) relies on the back end of the bullet deforming under the pressure of the powder to fit into the rifling groves to get effective spin. As I recall this becomes less necessary as the kenetic energy (volocity) of the round increases. But even a modern rifle bullet will recive gentel groves in its copper sides from traveling through the barrel. note the groves:
http://pdukes.phys.utb.edu/RelVisual/bullet%20in%20flight.jpg
http://www.tonyrogers.com/weapons/images/high_speed_photos/webready/30_bullet_apple.jpg
6. the coriolis effect under certain conditions would quickly stop the ball from spinning.
7. even if the exterior shell began to spin, it wouldn't get the interior to spin at the same rate due to its viscus nature.

refrences:
http://en.wikipedia.org/wiki/Coriolis_effect
http://en.wikipedia.org/wiki/Rifling
http://en.wikipedia.org/wiki/Minié_ball

mind you I didnt read any of these articals so odds are you can defunct all my statements by really reading them ;-D

KingTutBaller
10-11-2007, 08:51 PM
I've actually read that the 'rifling' in a paintball barrel just gives the ball less friction, not actually making the ball spin. It has something to do with grooves on the inside of the barrel that act as tracks for the ball to come out of, instead of making contact with the whole barrel. The theory is less friction, better shot. Here's a website I quickly found that describes is a bit, but I've definately read much better articles on this.

http://www.vmempire.com/brtheory.htm

p.s. I'm not saying it's a myth or it's true, but I imagine some good research on a reputable barrel producer such as Hammerhead could enlighten you.

spray and pray
10-12-2007, 04:19 AM
It does make it more accurate. I have a hammerhead and it is WAY more accurate than a freak. I would have to say it does make it more accurate. The only probem with rifling is when you break alot of paintballs you will probably hit your teamate.

chnk
10-12-2007, 06:07 AM
honestly if you think about the way the paintball is shaped i dont think it'll work, i mean there is a reason why a rifle bullet is shaped the way it is,

if a ball like bullet was good then they use it in rifles,

shunut
10-12-2007, 07:52 AM
Also remember that paintballs are not solid. There aren't filled all the way up with paint, which causes the balls to spin and can affect the balls trajectory.

chnk
10-12-2007, 09:27 AM
Also remember that paintballs are not solid. There aren't filled all the way up with paint, which causes the balls to spin and can affect the balls trajectory.

exactly
that fact we use paintballs kind of just says it all, if they where shapped like bullets or eggs it might be different,

rifling wouldnt work because of how the paintball is, shape, weight, etc wouldnt cut through the air like a bullet so rifling wont help it, a barrel will give you better accuracy but dont expect the ball to fly 200 yards from where you're standing

slim and shady
10-12-2007, 05:28 PM
lacking any real world experience in this but...

I'm going to venture that it is a myth do to:
1. lack of mass in the paintball
2. lack of kinetic energy in a paintball
3. 1+2 = minimal gyroscopic effect.
4. Rifling was only truly effective when the Miniť ball (I.E. bullet shaped bullet) was introduced.
5. rifling often (but not always) relies on the back end of the bullet deforming under the pressure of the powder to fit into the rifling groves to get effective spin. As I recall this becomes less necessary as the kenetic energy (volocity) of the round increases. But even a modern rifle bullet will recive gentel groves in its copper sides from traveling through the barrel. note the groves:
http://pdukes.phys.utb.edu/RelVisual/bullet%20in%20flight.jpg
http://www.tonyrogers.com/weapons/images/high_speed_photos/webready/30_bullet_apple.jpg
6. the coriolis effect under certain conditions would quickly stop the ball from spinning.
7. even if the exterior shell began to spin, it wouldn't get the interior to spin at the same rate due to its viscus nature.

refrences:
http://en.wikipedia.org/wiki/Coriolis_effect
http://en.wikipedia.org/wiki/Rifling
http://en.wikipedia.org/wiki/Miniť_ball

mind you I didnt read any of these articals so odds are you can defunct all my statements by really reading them ;-D


I must say that I am impressed with your knowledge of post modern rifles, and good references. Thanks to all else who had a say, I think im leanin toward, "Dont work" myself.