As you folks know that there was some issue with my steel sleeve and it was because of my wrong procedure to install it.
However, when it was working smoothly I observed that the gun produced a thud sound and no spring vibrations. So much so that the pellet exist sound from muzzle was very prominent on the wave. The gun shot very silently.
Now I have Teflon (PTFE) sleeve and the gun is visibly more noisy and it makes it difficult to recognize original and vibrations. Pellet speed is the same.
Conclusion, if possible use steel (metallic) sleeve of around .5mm; it will reduce spring noise to almost nothing. Springer will shoot very silently.
Check below the wave pattern top one is with steel and below is the Teflon.
Comments please.
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