What is the purpose of a polymer tipped bullet?

What is the purpose of a polymer tipped bullet?

Many plastic-tip bullets are also created to give greater aerodynamic performance to hollowpoint rounds, as adding the polymer tip can improve this aspect, resulting in a flatter, faster trajectory. The plastic can also drive into the core of the hollow point, expanding the round in the target.

What does open tip mean?

Open Tip is a new term that’s been adopted by the U.S. Military to describe match bullets that have a small hollow point or tip that is the by-product of the bullet making process.

What is Meplat trimming?

Meplat trimming is the process of cutting the meplat of the bullet (tip of the bullet) to uniform the ogive length and the frontal area of the meplat for more consistent Ballistic Coefficient (BC).

Are polymer bullets legal?

Because of the publicity, North Carolina, South Carolina, Oregon and Oklahoma have laws that make it illegal to possess teflon coated bullets, while Virginia makes it illegal to use teflon coated bullets to commit a crime.

What is a blue tipped bullet?

Some manufacturers feature blue plastic caps on their rifle bullets: this is just for aerodynamics in an expanding hunting bullet. Some military rounds may have blue paint on the tips, to denote steel core, or tracer, or whatever. As shown below, Glaser safety bullets have a blue plastic cap.

Are all bullets FMJ?

Most NATO militaries use only FMJ rounds. This is due to an international treaty that was signed many years ago that forbids the use of expanding rounds. However, the USA never ratified that section of the treaty, and the US Army just recently adopted hollow point ammo along with the new Sig Sauer® M17 pistol.

What is a bearing area?

A bearing surface in mechanical engineering is the area of contact between two objects. Strictly speaking, the bearing area refers to the area of the screw head that directly bears on the part being fastened. For a cylindrical bearing it is the projected area perpendicular to the applied force.

What is the purpose of a Cannelure on a bullet?

In cartridges, the cannelure is a band pressed into the case which helps prevents cartridge setback when the case mouth is properly crimped onto the cannelure. Bullet setback of . 1″ can increase pressure beyond safe limits and possibly cause a catastrophic failure.

Why are Teflon coated bullets illegal?

There is no benefit to “Teflon bullets”, they are a creation of Hollywood. The actual “Teflon bullets” were designed to reduce barrel wear from from hardened brass bullets, which in accordance with Federal Law are banned from civilian possession as they are “Armor Piercing”.

Do flat meplat non expanding bullets work on bones?

Flat meplat non expanding bullets definitely give optimum results when striking major bones. When bones are hit, wound channels change from being consistant 1 to 2″ wide wound channels to much more dramatic wounding. When this type of bullet strikes bone, the fragments that separate tend to be very large and incapacitating.

What is the best tool to cut a meplat?

The Hoover Meplat Trimmer is the best tool on market for trimming meplats. It features a proprietary radiused bullet stop that will not damage the bullet and provides extreme repeatability. The Bullet is held by its OD and is stopped on the ogive by the radiused bullet stop for a square repeatable cut.

Do flat meplat bullets produce hydrostatic shock?

Oddly, although entry wounds with wide flat meplat bullets are almost always large, non expanding bullets of this style do not seem to produce hydrostatic shock at the typically low muzzle velocities produced by big bore rifle and handgun cartridges.

What is the difference between bullet uniforming and meplat trimming?

The Bullet is held by its OD and is stopped on the ogive by the radiused bullet stop for a square repeatable cut. When uniforming bullets, you need the three major parts of the bullet to be the same: The boat tail or base of the bullet, the bearing surface length and the ogive. When meplat trimming, you want to uniform the ogive length only.