uniformed meplat hollow points

[milboltnut]

I read recently about hollow point bullets.....

a cavity or hollow in the bullet nose (hollow point) to shift the projectile's centre of gravity rearwards....

Holding the bullet and looking at the hollow point under a magnifing glass, you can see the hole isn't level on certain bulllets manufactures, and Berger is looking real good..

I remember seeing a hollow point uniformer.... does a uniformed hollow point help control the center of gravity?

 

[fullersson]

Meplat trimming improves accuracy; I'm not sure about that center of gravity stuff.

 

[milboltnut]

this is where I read it from.....

http://en.wikipedia.org/wiki/Very-low-drag_bullet

 

[fullersson]

I didn't mean to sound rude. I was trying to say that meplat trimming may do something to the center of gravity, but for me the only important thing is the improvement in accuracy. Good shooting, Brian.

 

[milboltnut]

Not at all..... you weren't rude... it sounded like you weren't sure...

It's funny, either you have guys on the up and up humble pie, or just down right conceited.... I appreciate your consideration though!

 

[15Tango]

I've heard a little theory here and there talked about with respect to the balance point of bullets and it's interesting. I bet we will see more emphasis on a bullet's center of gravity in the years to come. I'm sure it has a lot to do with how they perform while in flight as far as being in a nose up or down attitude, or angle of attack, in relation to relative air flow direction. It also makes me wonder how much it has to do with required bullet RPM for proper stabilization.

How much does the hollow cavity of the current VLD bullet's hollow points have to do with this now? Who knows, the manufacturers would have that answer, I believe some of the people from Berger frequent this site now and then and perhaps they can chime in on that.

As far as I know the whole point of the VLD bullet's nose getting longer and skinnier is all to reduce interference drag, pointing the meplat on them makes the meplat smaller reducing interference drag even more, [they] say about 5% on average gain in ballistic coefficient and it also makes the BC more consistent - two things we all want from our bullets.

The skinny and long nose profile does for interference drag what boat tails do for form drag, I've noticed that boat tails are getting longer and skinnier as well, I was really impressed with how small the base diameter of the 140 Berger VLDs were that I started running that have an advertised BC of .640. With how long and skinny bullet tips are now I'd guess that the boat tail is the next part of bullets to get the VLD treatment getting longer and skinnier to reduce that form drag more and more. It'd be cool to have 6, 6.5 and 7MM bullets commonly over that .700 BC mark - I'm sure some day we will.

That's my observance and knowledge on the subject, hope it helps.

Wayne

 

[milboltnut]

I'm sure Litz and others are working on it as we speak... I had LD bullets from them, although my 1:10 did a fair job stabilizing them.

I haven't tried the VLD's. I would have to bump down the twist, which that's what I should have done instead of getting the 1:12 but I wanted to varmint instead. Sigh.....

I just have to play with Ballistics. Someday, over the rainbow,
experimenting will pay off.