So new member. I bought a notos and shoot various small game with it and decided to mod it. I did a 500mm barrel extension and bottle conversion with a couple extras. So before I changed anything 740 fps was what my crono was saying after I changed everything out it's saying 450 fps and for the life of me I can't figure out why. I'm new to all this. Is there any suggestions to why and what I did wrong? Thankyou.
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