HERE YOU GO. ANY MORE QUESTIONS?
HOW FAR WILL A SHOTGUN SHOOT?
By Dick Baldwin
(This article is reprinted with permission from the Gun Club Advisor, Spring, 1994)
Gun club operators have long been asked the age old question, "How far will my shotgun shoot?"
The size of the shot used has much to do with the range of the load. It can be assumed that the same weight of different sizes of shot, propelled by the same amount of powder, will develop identical muzzle velocities. However, small shot lose their effectiveness before their pattern density is lost, while the larger sizes of shot lose their pattern density before their energy and stopping power is lost. No. 6 shot seems to be the intermediate in that it loses its pattern density and penetration effectiveness at about the same point on its trajectory. Another important factor is the angle of elevation when firing. When No. 6 shot is fired from a gun held slightly above the horizontal, the pellet drop will cover an area of approximately 400 feet in length. The nearest shot will fall about 300 feet from the gun's muzzle. While the furthest will land some 700 feet away. When the gun is elevated at an angle of approximately 40 degrees the drop area of the shot is greater, from 400 to 900 feet.
A load of No. 4 shot will carry somewhat further. The nearest pellets striking the ground some 600 feet away. These distances vary from shot to shot as weather conditions, particularly the wind, have an effect on a shotgun's range.
It is the generally accepted opinion that the No. 7 1/2 shot, used in trap loads, have an extreme maximum range of about 300 yards. Trapshooting ranges should provide this distance for their approximate danger zone.
A French ballistics expert, General Journee, years ago worked out a formula to the effect that the maximum range in yards equals 2200 times the shot diameter in inches. When the gun is held at a horizontal position or only slightly elevated, this formula gives the maximum range of shot sizes as shown below.
No. 2 - 330 yards
No. 4 - 286 yards
No. 6 - 242 yards
No. 7 1/2- 209 yards
No. 8 - 198 yards
Altitude also has an effect on how far shot will carry. Data published by the Sporting Arms and Ammunition Manufacturers' Institute, for example, indicates the maximum range for No. 7 1/2 shot is 780 feet at sea level but increases to 1,080 feet at high altitude (12,000 ft.).