bullets with striations

[richalexander97]

I had an idea to improve the B.C. of bullets. You have a. 22 cal bullet but it has grooves or striations running length ways from tail to nose.

To get a visual idea, Google bullet striations. Imagine that but with much deeper grooves. It would give the B.C. of a. 19 cal bullet. In theory?

These could be straight, or angled... in which case they would create spin.

Obviously you have to create a gas seal so it needs a shotgun style wad, behind the bullet.

Any thoughts? in terms of just how viable the concept is

 

[308pirate]

How deep is your technical knowledge of aerodynamics?

Are you an engineer or ballistician, or is this just another amateur shooting from the hip because "it makes sense"?

 

[richalexander97]

Obviously I have no deep knowledge but I know the idea has not been tested... on paper It seems to work

 

[stello1001]

So grooves on the bullet and then grooves in the bore. The grooves in the bore already imprint or dig into the bullet. Already, I'm thinking this could end up leaving the bullet with very little surface area engaging with the lands/grooves of your bore. Therefore the bullet could potentially go askew and causing very inconsistent results downrange. I'm no ballistics/statics, aerodynamic, or engineering expert but that's my thinking.

** Edited 4 spellchecking **

 

[richalexander97]

Well yes u are reducing the bearing surface. Less contact with barrel. How this affects the spin I don't know.
The cuts could be more angular or squared, to retain bearing surface while still 'slimming' the caliber.

It was really an idea for a PDW. to allow extreme aerodynamics without the associated barrel wear/fouling

 

[918v]

I vote 5r striations

 

[FLIGHT762]

I think you should dimple them like a Golf Ball.

 

[Rocketmandb]

I think you should dimple them like a Golf Ball.

Maybe we should just shoot golf balls.

 

[supercorndogs]

Na.

 

[spife7980]

Range Report - Twist match bullets

I came across this on Facebook. Interesting concept. Reminds me of a nerf football. I could see it possibly improving inefficient bullets. What do you guys think?

www.snipershide.com

 

[brianf]

possible benefit is the uneven surface smooths out the drag like laminar flow creating a boundary layer of air which creates less friction as other atmosphere passes over

Gut call at 250,000 rpm there is already a boundary layer around the bullet on a smooth.

I’d also be worried that the mfg of the grooves will not be perfectly weighted like a homogeneous lead core or turned solid. Causing balance issues.

Love to see the results but I’m thinking no