Originally Posted by Folken
I was wondering if it's possible to adjust the velocity on a Crosman 3357? I'm chronoing at 180-190 and was hoping to turn it up as I'm noticing my paintballs aren't reaching as far as my other markers.
No velocity adjustmant on a 3357.
If your 3357 is original (thus 18-25 years old), replacing the complete valve assembly might get you more velocity, lots of age on the rubber seal/gaskets.
Replacing the hammer spring might help also, it gets weak with age. With a new spring, the hammer will hit the valve stem harder and let more gas out, by driving the valve stem in farther.