AN IMPORTANT CONSIDERATION FOR THOSE TUNING THEIR AIRGUN!
Airgunbbs is dedicated to promoting the safe and LEGAL shooting of airguns and we feel that the following advice is fundamental.
The power of a non FAC airgun must be under 12fpe. This is the LAW and failure to comply can be punished by 10 years imprisonment plus a fine. Furthermore any infringement of the Law gives a negative image our sport.
When tuning a PCP, OR spring powered air gun, the CHOICE OF PELLET can have a significant difference in the power output of your gun.
For example, you may set your gun's power using, say, AA Field Target and be under 12fpe. The police could test your gun using Bisley Mags and the power output could be over 12fpe. Therefore, you must test your gun with a variety of pellets.
Furthermore, if you are using a PCP, be aware of the power curve of your gun.
At certain pressure ranges your gun's fpe, everything else being equal, will be optimum. Therefore, you need to find the pressure range where your gun outputs the greatest fpe.
Have fun, shoot well!
This comes from Campbell
