Hello gent's,
I have a sumatra 500 .22 that normally shot with 980 fps with 28.5 grain eunjin pellet @2500 psi with max set up on wheel adjuster. It had been quite a while I don't use it, approx 3 months. I just shot it a few days back and it gave me 728 fps with the same pellet and set up as before. I shot several time and the result was approx. the same. Wondering if any of you have an experience and trouble shouting with this gun, why the power dropped ? ....I opened it to check any mechanical failure, but all fine. I did not open th barrel, only the backside parts of the barrel.
Thanks in advance for sharing ......
I have a sumatra 500 .22 that normally shot with 980 fps with 28.5 grain eunjin pellet @2500 psi with max set up on wheel adjuster. It had been quite a while I don't use it, approx 3 months. I just shot it a few days back and it gave me 728 fps with the same pellet and set up as before. I shot several time and the result was approx. the same. Wondering if any of you have an experience and trouble shouting with this gun, why the power dropped ? ....I opened it to check any mechanical failure, but all fine. I did not open th barrel, only the backside parts of the barrel.
Thanks in advance for sharing ......