Standardized Pellets for World Championships

[cris]

The standardized pellets to be used to check fpe power levels at the World Championships are as follows:

.177 caliber, H&N 10.65 grain http://www.pyramydair.com/s/p/H_N_Baracuda_Match_177_Cal_10_65_Grains_Round_Nose_500ct/20

.20 caliber, H&N 13.27 grain http://www.pyramydair.com/s/p/H_N_Baracuda_20_Cal_13_27_Grains_Round_Nose_200ct/17

.22 caliber, H&N 21.14 grain http://www.pyramydair.com/s/p/H_N_Baracuda_Match_22_Cal_21_14_Grains_Round_Nose_200ct/21

The average of a 5 shot group will determine fpe power level for each of the 2 air rifle classes.


Air Rifle Power Check Procedure
Air Rifle power to be checked before the match so there should be a suitable chronograph system available at each event. Common Handler & Natermann sport pellets or similar to be used. A sequence of 5 shot to be measured by a chronograph. As “effective power” will be considered the speed media value (converted in joule) noticed by the tool. Air Cylinders to be filled at maximum charge before test.

Note: J = • m Vo2 Where m is expressed in Kg, Vo speed in meters per second.

To verify the real power of the 16.27 Joules (12 ft/lbs) or 27.12 Joules (20 ft/lbs) maximum Air Rifles a;

.177 Match Pellet of 4.50mm in diameter and 10.65 grain in weight must be used
= max velocity of 712.50 and energy of 12 ft lbs
= max velocity of 919.55 and energy of 20 ft lbs

.20 Match Pellet of 5.00mm in diameter and 13.27 grain in weight must be used
= max velocity of 638.20 and energy of 12 ft lbs
= max velocity of 823.77 and energy of 20 ft lbs

.22 Match Pellet of 5.51mm in diameter and 21.14 grain in weight must be used
= max velocity of 505.55 and energy of 12 ft lbs
= max velocity of 652.70 and energy of 20 ft lbs