Friday, August 26, 2005
Chrono testing, part 1
Date: August 21, 2005
Time: 1pm
Location: Buckeye Hills Shooting Range
Temperature: approx 100 degrees
Humidity: approx 25%
Elevation: approx 1000 ft
Barometric pressure: unknown
Firearm: Browning BT-99
Caliber: 12 gauge
Barrel length: 32"
Choke: Improved Modified
Load 1: Winchester AA case, Winchester 209 primer, 15.6 grains 700x, Claybuster CB-1100-12 wad, 1 ounce # 7 1/2 shot
Average velocity: 1166 fps
Max velocity: 1181 fps
Min velocity: 1148 fps
Velocity spread: 33 fps
Standard Deviation : 13.70Load 2: Winchester AA case, Winchester 209 primer, 15.6 grains 700x, Winchester WAA12SL wad, 1 ounce # 7 1/2 shot
Average velocity: 1151 fps
Max velocity: 1164 fps
Min velocity: 1140 fps
Velocity spread: 24 fps
Standard Deviation : 9.15Load 3: Federal Gold Medal case, Winchester 209 primer, 15.6 grains 700x, Claybuster CB-2100-12 wad, 1 ounce # 7 1/2 shot
Average velocity: 1126 fps
Max velocity: 1142 fps
Min velocity: 1100 fps
Velocity spread: 42 fps
Standard Deviation : 17.33Load 4: Winchester case, Winchester 209 primer, 17.5 grains 700x, Winchester WAA12 wad, 1 1/8 ounce # 8 shot
Average velocity: 1170 fps
Max velocity: 1176 fps
Min velocity: 1164 fps
Velocity spread: 12 fps
Standard Deviation : 5.54
Highest average velocity: Load 4
Smallest velocity spread: Load 4
Lowest standard deviation: Load 4
I think I see a pattern developing here...........
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