1/6/2024 0 Comments Subsonic rounds dead by light![]() The 25 yard distance is actually higher than that of the high velocity load in order to compensate for the lower velocity. At 100 yards, the load is down more than 7 inches. The slightly lower velocity shifts the midpoint trajectory and circle crossing points closer to the muzzle: 35 yards at circle top, about 57 yards at circle bottom, and. Trajectory of a 22 Long Rifle subsonic cartridge. Match shooters favor this load because the turbulence that accompanies transitioning through the sound barrier is absent. We can do the same thing for Federal's subsonic target load. ![]() Trajectory plot for 22 Long Rifle high velocity load. Way out at 100 yards, the bullet is about 4 3/4" low. When the bullet reaches 40 yards it is at the top of the circle, and at about 67 yards the bullet falls out the bottom of the circle. At about 12 yards, the bullet crosses into the bottom of our 1" circle, and at 25 yards is. Trajectory of a typical 22 Long Rifle high velocity cartridge.įrom looking at the table, it might surprise you to see the bullet starting off 1.5" below the line of sight, but remember that the scope is 1.5" above the center line of the rifle bore. I assumed that I was going after a target with a 1" diameter vital zone, and asked Gun Controller to determine the optimum sighting in distance so that I could hold dead on the target and still hit within the 1" circle. Table 1 below shows the trajectory results for the American Eagle bargain load, typical of most dime store 22 ammo that sells for about $2 a box. Federal's catalog lists velocity data for 25, 50, 75, and 100 yards, making this calculation very easy. Fortunately, Gun Controller has the capability to determine the ballistic coefficient from range data. Gun Controller requires a ballistic coefficient to perform its calculations, but not one of the half dozen ammunition catalogs I reviewed had published that information. I use Jim Ristow's Gun Controller V2.2.7 to take a look at trajectories for Federal's American Eagle discount load, as well as the premium UltraMatch subsonic cartridge. Take it from me, its far easier to calculate the answers with a modern computer program. How far above point of aim at 25 yards would you sight in your favorite squirrel rifle to stay within a 1" circle with a dead on hold? What would the drop be at 100 yards with that sighting? How many rounds at the range would it take to come up with answers to these questions? Later I'll look at the effect of wind on bullet drift. This page covers how bullet drop varies with distance, and attempts to shed some light on optimum sight settings. Covered subjects include bullet drop, wind deflection, and the effect of scope cant. In this series of articles you'll find "thought experiments" conducted with the help of computer software that, among its many useful features, can predict the path, or trajectory, of a bullet in flight. Ever wonder what the trajectory of a 22 Long Rifle bullet looks like? I often have, especially when trying to sight in a rifle.
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