What is meplat diameter?
Meplats are often used to increase the bullet’s wounding ability. Coincidentally, the shape of the nose of an axisymmetric projectile that gives it the least possible aerodynamic drag at hypersonic speeds always has a meplat, the diameter of which depends on the length of the nose.
Do cast bullets expand?
In my experience, this bullet only expands modestly at an impact velocity of about 1000 fps, unless cast quite soft. The reason for this minimal expansion is that the spud is the same diameter as in its . 44 Magnum case over 23.5 grains of Winchester 296, velocities jump up to the 1350-1400 fps range.
What is a Hardcast bullet?
Hard cast bullets can be formulated of numerous alloy mixes (antimony, silver, tin, etc) containing some lead, but the alloys make the bullet much harder than pure lead. Most hard cast bullets will have a Brinell hardness # of 11 to 30 and as such are several times harder than lead.
What feature of the Spitzer bullet extended its effective range?
The new 1898 pattern 8×50mmR Lebel cartridge loaded with Desaleux’s new lighter 12.8 grams (198 gr) Balle D brass mono-metal spitzer bullet achieved a muzzle velocity of 700 m/s (2,300 ft/s), providing a somewhat flatter trajectory and a greatly improved maximum effective range.
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 hard cast bullets bad for your gun?
If a bullet is too hard and driven at slow speeds, it may not bump up, seal the bore and could lead the barrel. Especially if it is on the small side for the bore. A too soft bullet that is driven too fast can also lead the bore.
What cast lead bullets?
A cast bullet is made by allowing molten metal to solidify in a mold. Most cast bullets are made of lead alloyed with tin and antimony; but zinc alloys have been used when lead is scarce, and may be used again in response to concerns about lead toxicity.
Why are bullets streamlined?
The bullet having a nose, a cylindrical body surface, a rotating band section spaced from the cylindrical body surface. The streamlined part of the bullet improves the range, stability, velocity and trajectory of the bullet.
What is pointing a bullet?
A bullet pointing die is a die used to make a sharper point on a bullet. By doing this, we have made the bullet fly more efficiently resulting in less drop and wind drift.
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 are some examples of flat point meplats?
Some examples of flat meplats disscussed throughout the small bore texts of the book Hunting cartridges of the World include- the Norma Vulcan in 6.5mm, 7mm and .30 calibre along with several brands of flat point .30-30 bullets. Of these, the Vulcan in all calibres and the .30-30 Sierra projectiles showed very good results.
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 are the disadvantages of a flat meplat projectile?
As stated, wide, flat meplat non expanding projectiles are typically slow or ‘delayed’ killers, even with good shot placement. This can pose serious problems when hunting large dangerous game.