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Old 06-09-2012, 11:19 PM   #1 (permalink)
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Crosman 3357 velocity adjustment?

Hello,

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.
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Old 06-09-2012, 11:41 PM   #2 (permalink)
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Hello,

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.
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Last edited by acrewofone; 06-09-2012 at 11:45 PM.
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Old 06-10-2012, 12:03 AM   #3 (permalink)
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Replacement parts aren't made anymore are they? I bought it off eBay and it's like new. Guy fired maybe 20 rounds through it then stashed it in his closet till recently. Valves and seals look to be in great shape.
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Old 06-10-2012, 12:04 AM   #4 (permalink)
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What do your 3357s chrono at roughly?
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Old 06-10-2012, 12:11 AM   #5 (permalink)
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Originally Posted by Folken View Post
Replacement parts aren't made anymore are they? I bought it off eBay and it's like new. Guy fired maybe 20 rounds through it then stashed it in his closet till recently. Valves and seals look to be in great shape.
As the grip assembly is the same as the Crosman 357 .177 Pellet Airgun (just the barrel assembly and cylinder are unique to the 3357), you can still get internal replacement parts direct from Crosman (the newer 357 Pellet Gun does have a hogue style grip, so the frame itself is different, but most of the internal parts are the same) .

I buy all of my parts the do the rebuilds (except for the ball detent in the 3357 cylinder), directly from Crosman (1-800-724-7486), for US shipping, they only charge $4 on any size order.
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Last edited by acrewofone; 06-10-2012 at 12:16 AM.
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Old 06-10-2012, 12:15 AM   #6 (permalink)
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What do your 3357s chrono at roughly?
Last time I was able to chrono one (before the chrono broke), was about 210~220.
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Empire AXE / Invert Mini / Empire BT TM-15 / Tiberius T8
Crosman 3357 Revolver / Mark V50 Revolver / AGA62 Pistol

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M. Carter Brown 100+/0- Feedback
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Old 06-10-2012, 12:35 AM   #7 (permalink)
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Quote:
Originally Posted by acrewofone View Post
As the grip assembly is the same as the Crosman 357 .177 Pellet Airgun (just the barrel assembly and cylinder are unique to the 3357), you can still get internal replacement parts direct from Crosman (the newer 357 Pellet Gun does have a hogue style grip, so the frame itself is different, but most of the internal parts are the same) .

I buy all of my parts the do the rebuilds (except for the ball detent in the 3357 cylinder), directly from Crosman (1-800-724-7486), for US shipping, they only charge $4 on any size order.
That's good to know, thanks. Do they have an online parts number catalog with pricing to look at?
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Old 06-10-2012, 01:54 AM   #8 (permalink)
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That's good to know, thanks. Do they have an online parts number catalog with pricing to look at?
http://www.crosman.com/pdf/manuals/C...%20&%20PL3.pdf
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Crosman 3357 Revolver / Mark V50 Revolver / AGA62 Pistol

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