Oldschool280
Well-Known Member
- Joined
- Jan 22, 2016
- Messages
- 616
I have to chime in with an OH-Jive....
So now i decided , whatever steve hornady calls it is what i'm calling it , i sent them an email
I have to chime in with an OH-Jive....
How the hell do you pronounce it? Ive heard all three and don't want to sound like a fool!
I'm just going to start calling it 'bullet transition' or 'bullet arc' ,never liked the word OGIVE anyway.
In my ears it goes over about as well as someone saying PUCE, MOIST, or BULBOUS.
But most reloaders don't understand what 'the ogive' means.It is spelled "Ogive"
It is pronounced /O jiv/ and is a Noun, And means a pointed or Gothic Arc.
Ether way, most people into ballistics will know what you are talking about.
Your understanding is incorrect.My understanding is that the ogive is the point on the nose of the bullet where the dia is equal to the bore.
Your understanding is incorrect.
A synonymous misunderstanding would be thinking the bullet nose is only a specific point on a bullet nose.
https://en.wikipedia.org/wiki/Ogive
It's important to accept this so that you can see target datums for measure are not so easily achieved as assumed. For instance, a reloader may think their tool contact correlates with their land contact point. But common ogive radius variances and many different leade angles available and changing with firing, make that correlation unlikely.
Folks should understand that much at least.
Your datums mean nothing to mine or to anybody else. They are as unique as every barrel.
So we go back to what matters: reproducing whatever the bullet/barrel combination tells us is best.
Nearly any tool or local datum works as well for this.
That's kind of funny So now it looks I never was wrong I just thought I was wrong. And since I thought I was wrong now I am wrong.
Steve
That's a very astute answer Steve, I had to read it several times and laugh because I know the feeling. (It happens to me all the time)
All that I know is that the Ogive starts at the body of the bullet and ends at the nose or end
of the bullet. and it is ever changing making it a arc not a radius. just like the trajectory of a bullet that follows a parabola and not a radius.
There are many shapes of Ogive's and they are determined by the bullet maker depending on his needs and desires. Where they make contact with the rifling has to many variables and does not change the Ogive shape only performance.
Most of the newer bullets have a secant Ojive giving them a longer bullet length for the same weight increasing the ballistic coefficient. It also increases the loaded length in order to engage the rifling at the same diameter. But in most cases it also shortens the body length of the bullet changing the way it behaves in the rifled bore.
Now I'm confused ! oh well its that pointed end of the bullet. (A little humor)
J E CUSTOM