Why my P68SC shooting so low? - Page 3

splattttttt · 05-16-2008, 11:23 AM

The last P Series I owned, I disabled the velocity adjuster by removing the BB, and filled it with JB Weld.
I continued to fill the front of the bolt, which I later redrilled, but with a much tighter exit in hopes of retaining more in my 12g case. It worked, but not to the extent I was hoping for.
Most shots I was ever able to get were 20, sometimes 22 at best Velo.

russc · 05-16-2008, 11:28 AM

Wow man, you gave up really quickly on this one. Palmer's is never a bad choice but come on...

Aim for the trash · 05-16-2008, 03:42 PM

I was going to have the gun palmerized after I bought it anyways.

Besides, I don't even have the tools necessary.

russc · 05-16-2008, 03:46 PM

All you need is a screwdriver to open up the rva and shim it, and you shouldn't need any tools at all to make sure the velocity choke screw isn't obstructing the air port in the bolt. Just take it out and look into the input (bottom) hole in the bolt. If you can see the screw blocking the port, you want to move it back.

Aim for the trash · 05-16-2008, 04:35 PM

I CAN'T put any more shims in If I do (which I have tried) I won't be able to cock the gun.

Also, I don't have the right tools for adjusting the bolt.

Besides, the efficiency is horrible, so I am sending it in for the Performance tune anyways.

HurtCow · 05-16-2008, 08:08 PM

That's your best bet. They'll get it working great. They did their thing to a PMI-1 I used to have, and it got 35-40 useable shots per 12g.

splattttttt · 05-16-2008, 09:28 PM

Quote:

Originally Posted by HurtCow

That's your best bet. They'll get it working great. They did their thing to a PMI-1 I used to have, and it got 35-40 useable shots per 12g.

The P68 will never achieve these numbers. Don't ask me why.

Aim for the trash · 05-16-2008, 10:39 PM

Long barrel.

I might have mine cut down to the feedtube. How many more shots do you think it would get?

splattttttt · 05-17-2008, 07:48 AM

Quote:

Originally Posted by Aim for the trash

Long barrel.

I might have mine cut down to the feedtube. How many more shots do you think it would get?

Done that too

Don't bother.
I'm not really aware of any mods other than chocking the bolt could grant you more shots than say maybe 20. Or 25 at best after a standard Palmerization.

Matt Ribble · 06-03-2008, 12:01 PM

I am having a similar problem. I cannot for the life of me get the velocity over 200.

My bolt has a rear velocity adjustment screw, but no nut on it. I have washers and a brass nut right now but I don't really know what I'm trying to do with it (basically am I trying to screw the nut/washers on there and draw that screw backwards or was it fine being forwards?) I don't know how the choke in this case works.

My tank psi is 850 output

My hammer spring looks fairly worn. Don't have the tools to get at my valve spring. The inner tube is free of gunk and the hammer is freshly polished

I was going to drill the hammer/rear air fitting to accept spyder springs, though I don't know if that will make it any better. I haven't found anything to shove down to artificially boost the spring power, but I don't know if it would give me the 60 fps boost I'm looking for. Alternatively I could hunt for another spring or attempt to stretch this one, though I'd like to do one before the other obviously

The paint I am using is 689, the weather is a nice 60 degrees and I am not aware of any gremlins lingering about.

Suggestions? A new spring would cost me 20 something from palmers (I am in Canada) so I'm anxious for a home remedy

05-16-2008, 11:23 AM	#21 (permalink)
splattttttt MCB Member Join Date: Apr 2006 Location: Bean Town, U.S.A. Posts: 2,809	The last P Series I owned, I disabled the velocity adjuster by removing the BB, and filled it with JB Weld. I continued to fill the front of the bolt, which I later redrilled, but with a much tighter exit in hopes of retaining more in my 12g case. It worked, but not to the extent I was hoping for. Most shots I was ever able to get were 20, sometimes 22 at best Velo. __________________ My Feed Back and album Norman Vincent Peale: "Believe that you are defeated, believe it long enough, and it is likely to become a fact. We tend to get what we expect." Carpe Diem Whish your Dog was smarter???

05-16-2008, 11:28 AM	#22 (permalink)
russc Newbie Join Date: Apr 2006 Location: Vancouver, BC Posts: 3,599	Wow man, you gave up really quickly on this one. Palmer's is never a bad choice but come on... __________________ Nelson Owner's Group / The PGP Owner's Group / My Gallery / My Feedback / Blackleaf Outfitters -Russ

05-16-2008, 03:42 PM	#23 (permalink)
Aim for the trash Rec Poster Join Date: Dec 2007 Location: Savannah, GA Posts: 82	I was going to have the gun palmerized after I bought it anyways. Besides, I don't even have the tools necessary. __________________ MCB feedback here Special Ops Paintball Feedback here

05-16-2008, 03:46 PM	#24 (permalink)
russc Newbie Join Date: Apr 2006 Location: Vancouver, BC Posts: 3,599	All you need is a screwdriver to open up the rva and shim it, and you shouldn't need any tools at all to make sure the velocity choke screw isn't obstructing the air port in the bolt. Just take it out and look into the input (bottom) hole in the bolt. If you can see the screw blocking the port, you want to move it back. __________________ Nelson Owner's Group / The PGP Owner's Group / My Gallery / My Feedback / Blackleaf Outfitters -Russ

05-16-2008, 04:35 PM	#25 (permalink)
Aim for the trash Rec Poster Join Date: Dec 2007 Location: Savannah, GA Posts: 82	I CAN'T put any more shims in If I do (which I have tried) I won't be able to cock the gun. Also, I don't have the right tools for adjusting the bolt. Besides, the efficiency is horrible, so I am sending it in for the Performance tune anyways. __________________ MCB feedback here Special Ops Paintball Feedback here

05-16-2008, 10:39 PM	#28 (permalink)
Aim for the trash Rec Poster Join Date: Dec 2007 Location: Savannah, GA Posts: 82	Long barrel. I might have mine cut down to the feedtube. How many more shots do you think it would get? __________________ MCB feedback here Special Ops Paintball Feedback here

06-03-2008, 12:01 PM	#30 (permalink)
Matt Ribble Newbie Join Date: May 2008 Posts: 4	I am having a similar problem. I cannot for the life of me get the velocity over 200. My bolt has a rear velocity adjustment screw, but no nut on it. I have washers and a brass nut right now but I don't really know what I'm trying to do with it (basically am I trying to screw the nut/washers on there and draw that screw backwards or was it fine being forwards?) I don't know how the choke in this case works. My tank psi is 850 output My hammer spring looks fairly worn. Don't have the tools to get at my valve spring. The inner tube is free of gunk and the hammer is freshly polished I was going to drill the hammer/rear air fitting to accept spyder springs, though I don't know if that will make it any better. I haven't found anything to shove down to artificially boost the spring power, but I don't know if it would give me the 60 fps boost I'm looking for. Alternatively I could hunt for another spring or attempt to stretch this one, though I'd like to do one before the other obviously The paint I am using is 689, the weather is a nice 60 degrees and I am not aware of any gremlins lingering about. Suggestions? A new spring would cost me 20 something from palmers (I am in Canada) so I'm anxious for a home remedy

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search