i need help with my thumper. i can't seem to get it to chrono over 250 maybe 255 fps. any help on getting this working right would be great..
thanks in advance guys
Are you running C02 or HPA?
Hpa with a regular high pressure output. I might try my old school tank with the 800psi output.
I guess I should try it with 12ies and I would like to find a 4oz co2 also
When I ran my thumper with 800psi, it toped out at about 275FPS. That is with underboring as well.
Your best bet is to run CO2. Whether it may be 12 grams, 4 oz, or something larger via bottomline.
Whenever you get a chance, break the thumper down and give it a nice vaseline rub down.
Hope that helps!
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