I have a Katran, which was tested at 11.9 foot pounds using JSB Exact Heavy Diabolo 10.34 grain.
Is the classification of sub 12 on an average or shot by shot? Using the FX pocket chronograph V2,
I have an average of 11.9 ft lbs, hi of 12.3 ft lbs & low of 11.3 ft lbs, standard deviation 0.2 ft lbs & a spread of 1.0 ft lbs.
This was over a string of 216 shots. I have put over 500 pellets through the Katran, so i think the regulator must be settled now. No matter how long the string, i get the same average 11.9 ft lbs. Is the gun legal by the average.
I have searched but cannot find any definitive answer to what the 12ft lbs reading is?
Hmmmm it is a grey area. Each ballistics officer will have their own range for testing from 3 shots to XX shots.
However, they also are not stupid and know that if the odd one goes over, but the others are under, then it is a fluke. FAC air guns are a lot more powerful - so it deffo won't fall into that with those readings.
If in doubt, pop along to your local police station and ask to speak to someone who does the testing to ask them their view on it. Will also be good to meet face to face to also build a rapport with them too.