What is a good ballistic coefficient?
Almost all rounds have a ballistic coefficient of less than 1.0, but large rounds like the 50 BMG can exceed this normal BC. The higher the number, the less drag the projectile will experience.
What is the ballistic coefficient of M855?
The US Army’s Ballistic Research Laboratory measured a ballistic coefficient (G7 BC) of 0.151 and form factor (G7 i) of 1.172 for the SS109/M855 ball projectile.
What bullet has the best ballistic coefficient?
What cartridge has the highest known ballistic coefficient? Well the direct answer to the question, (as no further info was requested, and assuming factory loads) is the Hornady A-Max 750gr . 50 Browning Machine Gun cartridge developed for target/match shooters and has a ballistic coefficient of 1.05 on G1 drag model.
What is MK318?
Designated as MK318 MOD-0 the round was designed as a barrier defeating round with superior penetration and better ballistic stability when shooting through glass, car doors and other barriers where other rounds simply bounce off. It was engineered after the Marine Corp identified issues with the M855 round.
Is a lower ballistic coefficient better?
A bullet with a high BC will travel farther than one with a low BC since it will keep its speed better, resist the wind better, and “shoot flatter” (see external ballistics). When hunting with a rifle, a higher BC is good for several reasons. A higher BC results in a flatter flight.
Does ballistic coefficient matter for hunting?
400, there’s only a 3-inch difference in trajectory and wind drift at 500 yards. Bullets with better BCs can deliver flatter trajectories and faster impact velocities. Both are good things for hunters, but to matter much at all the difference in BC and the distance to the target must be extreme.
Is 5.56 and 5.56 x45 the same?
There is no difference between 5.56x45mm and 5.56 NATO. They are the exact same cartridge, just using a slightly different name.
Does the military use M855?
The ammunition used by the soldier was the M855 “green-tip” projectile, adopted by the U.S. Army and Marines in the 1980s. It uses a fifty-five grain lead projectile with a copper jacket. It is designed to be stabilized by the 1:12 twist and twenty inches of the M16’s original barrel.
What is the ballistic coefficient of a 308?
308 Ballistics Chart
| Ammo | Ballistic Coefficient | |
|---|---|---|
| Barrel Length | (G1) | |
| Tula – 150 Gr. FMJ | 24 | |
| Federal MatchKing – 168 Gr. HPBT | 24 | 0.469 |
| PMC – 147 Gr. FMJBT | 24 | 0.453 |