What is so special about GS Custom Bullets that you are focusing on them, you may ask? That is a great question. Here is the answer.
In the challenging endeavor of marksmanship there are three major areas of bullet performance: internal ballistics, external ballistics, and terminal ballistics. GS Custom bullets offer superior performance in all three categories. Starting with the most important category, terminal ballistics, the GS Custom advantages are as follows.
Terminal ballistics refers to what happens when a bullet hits its target. For hunting and self-defense, terminal performance is paramount. Even with perfect shot placement, there is still a lot left up to the bullet. So what is desired in terminal performance, and how does a GS Custom bullet provide that performance? For now we will only be looking at performance in soft tissue. Since soft tissue is primarily made of water, the behavior of a bullet in soft tissue can be considered a hydrodynamic problem. This problem has been studied for over 100 years, and the conclusion is the best shape of a bullet to do the most damage is that of a flat faced cylinder. This is because as the fluid hits the flat face, it must come to a stop and change direction 90 degrees. This forces the fluid to move perpendicular to the bullet path at high velocity, resulting in a large temporary cavity. In fact, if the temporary cavity exceeds the elasticity of the tissue, it will contribute to the permanent cavity. The fluid pressure on the face of the cylinder also acts to stabilize the bullet as it move through the tissue. So the result is a large, long, straight channel compared to a bullet of the same diameter with a different design. GS Custom HV bullets have a hollow point design that allows the bullet to shed its aerodynamically efficient nose cone and become a flat faced cylinder when it impacts the target. The GS Custom FN bullets start out as a flat faced cylinder, like a pre-expanded HV. Both types provide the best terminal performance possible.
External ballistics is how the bullet behaves in the air on its way to the target. There are only two factors that affect the flight of the bullet: B.C. and speed. B.C. (ballistic coefficient) is a relative number that describes how efficiently the bullet can pass through the air. Speed or velocity is simply how fast the bullet moves. Higher velocity means the bullet has less time to drop or get pushed by cross wind on the way to the target. A high B.C. means the bullet will lose less velocity as it travels and be less affected by wind or air currents it may encounter. GS bullets offer improvements in both BC and velocity, and therefore give you a better chance of hitting your target.
Internal ballistics is what happen inside the rifle from when the primer ignites to when the bullet leaves the muzzle. After the primer starts the propellant burning, the bullet must move out of the case and into the barrel. As this happens, the rifling cuts into the shank of the bullet, this process is called engraving. Normal copper-jacketed bullets can require up to 9000 psi to engrave into the rifling. GS Custom Drive Band bullets require only about 900 psi to engrave. This allows the pressure behind an HV bullet to peak later in the barrel , thus dissipating the heat and pressure over a greater surface area. This reduces the strain on the throat, and prolongs barrel life.
All these advantages add up to a superior bullet. You can learn more about GS Custom bullets at The GS Custom web site.