It works at 9X and the firing barrel is perfectly straight and polished, just like in all my other weapons made the same way. I have not measured the speed but weighing 0.4 grams, it must be very fast. I cannot hit a soup can at more than 3 meters ... and I cannot calibrate the scope open, because the deviation is random, sometimes up, sometimes down or either side ... The barrel is 280 mm long.. Any idea why? 
I'm going to change the barrel. For some reason, I suspect that the bb`s acquires an energetic rotation movement and that produces the deviation, due to the magnus effect, it is only a suspicion. Thanks for your reply.jrrdw wrote: Wed Aug 26, 2020 4:00 am Since you make all the same way, try a barrel from a consistent shooter that you have, so on so forth the process of elimination...
kilopascal ? Kpa. 1 Kpa = 0.01 Bar, 0.145 Psi. But 1.8K would be so lowhectmarr wrote: Thu May 06, 2021 4:49 pm A safety valve for pneumatic installation that says 1.8K, how many bar or psi is it? It is a rupture disc of a pressure regulator and I do not understand when it is 1.8K ...
I confirm that is the case, a 1800 psi burst disk is typically one you will find on the exit side of a 850 psi regulator on a paintball bottle. A 3000 psi bottle will typically have a 5K disk, and a CO2 bottle will have a 3K disk.hectmarr wrote: Thu May 06, 2021 5:40 pmIn this specific case, 1.8K means 1.8 psi x 1000, it is 1800 psi, about 124 bar. Thanks for your answer.
hectmarr wrote:You have to make many weapons, because this field is long and short life
No, numbers are not required. With the photos, for me, it is more than enough.mark.f wrote: Thu Sep 29, 2022 5:02 pm Same thing can happen easier with oxygen tanks, but I probably don't have to sit down and do the chemistry to see how much of a few grams of petroleum grease can do in a sealed oxygen rich environment, even if it is an HPA tank.
If you combine high pressure with flammable solvents that will just make the explosion take longer
hectmarr wrote:You have to make many weapons, because this field is long and short life
It is a hybrid weapon that burns butane and compressed air. Putting some water in a sound suppressor to enhance the effect is a well-known trick for firearms, the fluid helps to cool the hot gasses and thus lowers the pressure. I would not be surprised if it is a factor here too, heat is certainly important and even HGDT makes a difference between "insulated" and "adiabatic" chambers when calculating power.hectmarr wrote: Thu Oct 13, 2022 11:30 amIt's not water, but if I pass a cotton ball through the inside of the barrel, it comes out quite wet.
hectmarr wrote:You have to make many weapons, because this field is long and short life
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