What is ogive in a bullet?
But what is an ogive profile? Simply defined, it’s the curved portion of a bullet forward of the bearing surface. Because a flat cylinder is undesirable for exterior ballistic reasons, rifle bullets have on of three ogives or “point profiles”: flat nose (FN), round nose (RN) or pointed (spitzer).
What is a tangent ogive bullet?
A Tangent Ogive (like our standard BTs) is less sensitive to seating depth but has more drag and a lower BC than a Secant Ogive of the same length. A Secant Ogive (like our standard VLDS) has a higher BC and lower drag than a traditional Tangent Ogive but can be quite sensitive to seating depth.
What is a secant bullet?
A secant ogive is an ogive that tapers more gradually relative to its length than does the tangent ogive and touches the curve at two places, which provides a higher Ballistic Coefficient (BC) and less drag.
What is VLD secant?
VLD bullets are designed with a secant ogive. This ogive shape allows bullets to be more efficient in flight (retain more velocity = less drop and wind deflection). While this result is desirable for many rifle shooters the secant ogive on the VLD bullets produces another result in many rifles.
What is the purpose of an ogive?
The word Ogive is a term used in architecture to describe curves or curved shapes. Ogives are graphs that are used to estimate how many numbers lie below or above a particular variable or value in data. To construct an Ogive, firstly, the cumulative frequency of the variables is calculated using a frequency table.
What is the best bullet seating depth?
Most bullets shoot most accurately when seated to within . 035 inch to . 015 inch of touching the lands.
What is bullet bearing surface?
The bearing surface length is the length of the bullet that is the major diameter: i.e. making contact with the barrel. This is the distance between the ogive and the end of the boat tail. You can measure this several ways, but usually with a bullet comparator at both ends of the bullet.
What is Berger VLD?
Berger VLD Hunting bullets are produced with one very important feature in mind: Performance. Typical VLD bullets have two specific features: a boat tail and secant ogive (nose) proven to be the most efficient shape for external ballistic performance.
Are Berger Bullets good for hunting?
More long range hunters consider Berger the best hunting bullet on the market because of the tight groups they can achieve and the reliable expansion on game.
How many types of ogives are there?
two types
There are two types of ogives : Less than ogive : Plot the points with the upper limits of the class as abscissae and the corresponding less than cumulative frequencies as ordinates. The points are joined by free hand smooth curve to give less than cumulative frequency curve or the less than Ogive.
Should the bullet touch the lands?
Most bullets shoot most accurately when seated to within . 035 inch to . 015 inch of touching the lands. Many benchrest shooters like them just kissing the lands.