FX FX DRS 500mm - Always one shot higher power

[HavocX]

My current FX DRS is shooting extremely well. 880 FPS with JSB 18.13
Always around 210 BAR it fires one shot over 1100FPS then goes back to normal.
Played with hammer tension and moved reg between 120-140 and nothing changes.

Any thoughts?

 

[ThE PuNiShEr]

Is the problem present immediately after charging the rifle with air or in principle? Anyway, in warmer weather (25-35 degrees), I think it's normal for there to be a difference in speed during the first and second shots when the rifle is plenum, the amount of air in it is less than the main bottle, and for me it gives a difference of 7-8 meters per second between the first and second shot, but for me this is normal and I know it, anyway you always shoot at a different temperature, anyway you always have to set your speed to the best for the given projectile so ...... !!!

 

[HavocX]

Is the problem present immediately after charging the rifle with air or in principle? Anyway, in warmer weather (25-35 degrees), I think it's normal for there to be a difference in speed during the first and second shots when the rifle is plenum, the amount of air in it is less than the main bottle, and for me it gives a difference of 7-8 meters per second between the first and second shot, but for me this is normal and I know it, anyway you always shoot at a different temperature, anyway you always have to set your speed to the best for the given projectile so ...... !!!

will do some more testing but no, it gets about 10 shots perfect speed, then jumps up to 1100fps for one shot then back down to same speed 880 for remaining shots.

 

[Ries]

Can you shoot on paper when it happens? Maybe a bad read from the chrony?