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General Discussion To Gateway To Airguns => China Gate => : cole5169 November 23, 2009, 09:39:05 AM

: My B3 project
: cole5169 November 23, 2009, 09:39:05 AM

Hi folks.  I bought 4 of these a couple years ago to get free shipping from Cummins.  Pictured is my baby, tuned and chopped by me.

I cut about 6.5 inches off the barrel, cut the cocking arm to match, and recrowned the muzzle; installed a new spring from a QF-2 kit, and new sear; cleaned and deburred the internals and lubed the spring with Maccarri's heavy tar; cleaned up the leather piston seal, scored it and then roughed it with sandpaper, soaked in oil then squeezed "dry"; installed a new breech seal (QF-2 kit, again); and slapped on a cheap muzzle brake that I got from Pyramyd Air.  I'm debating whether I want to bedliner the stock...

Before (or: "out of the box") - 4 inch groups (5 shots) at 20 meters with Gamo Match pellets, horrible dieselling, loud "grawnky" noises when cocking.
Now ("after messing with it, despite not knowing what I was doing") - 1/2 inch group (5 shots, Gamo Match) at 20 meters, nice and quiet.

Thanks to everyone who posted ideas and tips!  :)
-Joel

: RE: My B3 project
: longislandhunter November 23, 2009, 09:49:16 AM

congrats on a fine tune job,,,, the pic tells the whole story  :)

Jeff

: RE: My B3 project
: larspawn November 23, 2009, 01:35:35 PM

Joel,

Nice job.  B3s are great practice guns to work on.  Do you have any pics?

Andy

: RE: My B3 project
: shadow November 23, 2009, 11:16:50 PM

Look's like a killer group there the B's are fine lil shooter's with some TLC put into em. :) Ed

: RE: My B3 project
: howie1a November 24, 2009, 02:01:38 AM

A couple of the b 3' I used to have howie

: Re: My B3 project
: Jaymo November 24, 2009, 12:08:50 PM

Can I install a Crosman Quest spring in the B3 underlever for increased power?  Not saying I would. Just like to know if I could.

: Re: My B3 project
: howie1a November 24, 2009, 11:53:26 PM

I don't know haven't tried it but you can be the first let us know how you make out. somebody has to go first. Howie

: Re: My B3 project
: shadow November 25, 2009, 12:46:29 AM

I've installed springs from the Crosman TAC1 etc. in the B's with good result's. :) Ed

: RE: My B3 project
: leftcoast1 November 25, 2009, 02:33:37 AM

Nice pic of the target where are the pics of the shooter???

: Re: My B3 project
: Jaymo November 25, 2009, 04:09:59 AM

How's the recoil and pellet/hold sensitivity of a B3 with the Crosman spring installed? I'd kinda like to do it. Just not if it's going to adversely affect the shooting characteristics of it.

: RE: My B3 project
: cole5169 November 25, 2009, 09:49:34 AM

Sorry, I had a problem resizing the gun pic :)

Here's another try:

: Re: My B3 project
: triry November 25, 2009, 02:22:29 PM

heres a couple of my last b3 project ..............

: Re: My B3 project
: shadow November 25, 2009, 11:02:48 PM

There was a noticeable recoil and pellet/ hold sensitivity. The power was nice but after some testing with pellet's etc. I pulled the spring and reinstalled the stock one. Ed

: Re: My B3 project
: shadow November 25, 2009, 11:04:18 PM

There was a noticeable recoil and pellet/ hold sensitivity. The power was nice but after some testing with pellet's etc. I pulled the spring and reinstalled the stock one. Ed

: Man, she looks good in black
: cole5169 November 26, 2009, 03:33:35 AM

I have 3 more B3's sitting in the closet, unloved for now.   Maybe I'll bedliner the stock off of one of those, then I won't lose the stock my girl is wearing now...

Nice pics, triry :)

: RE: My B3 project
: leftcoast1 November 26, 2009, 08:51:20 AM

thanks for the pic Joel. I may buy another and try it again. I forget what I did with my last one. I think I sold it for shipping on here??? lol