.177 Discovery Bolt probe and handle part #s?

[3 at 8]

Under the diagram on the Crosam site for part #s, it says "see unique" for these items. What does that mean? I want to buy these along with a Disco .177 barrel for my first  1377 build. I found the .177 barrel part #(1760SE001) in another thread. I would like to buy directly from Crosman as I buying some other parts as well.

[SwampHunter]

https://images.app.goo.gl/TbihARmG2ZGuEmvo9

[3 at 8]

Thank you Swamp Hunter.

[BillK]

Crosman bolt is better than OEM but not as good as a real extended bolt.
https://mellonair.myfreesites.net/177-22-bolts
Just a thought...

[3 at 8]

Crosman bolt is better than OEM but not as good as a real extended bolt.
https://mellonair.myfreesites.net/177-22-bolts
Just a thought...

Thanks, Wouldn't the Disco stock bolt make an extended bolt if you put it in a 1377? I was going to order other stuff from him anyhow; like flat top valve/piston, solid hinge pin, etc. Would his extended bolt probe and handle be mechanically different or just refined aesthetically? First time doing this, so lots to learn. I have only the long steel breech so far.

[Rick67]

Crosman bolt is better than OEM but not as good as a real extended bolt.
https://mellonair.myfreesites.net/177-22-bolts
Just a thought...

Thanks, Wouldn't the Disco stock bolt make an extended bolt if you put it in a 1377? I was going to order other stuff from him anyhow; like flat top valve/piston, solid hinge pin, etc. Would his extended bolt probe and handle be mechanically different or just refined aesthetically? First time doing this, so lots to learn. I have only the long steel breech so far.

Aftermarket probes and bolts have normally better tolerances and are finished better.

I do not have Melon parts though, as mine are all Don Cothran assorted parts.

I like it that the DC probe has a magnet installed in the rear section, so that when you cock it, it stays cocked.

[SwampHunter]

Thank you Swamp Hunter.

your welcome, glad to help.

Crosman bolt is better than OEM but not as good as a real extended bolt.
https://mellonair.myfreesites.net/177-22-bolts
Just a thought...

Thanks, Wouldn't the Disco stock bolt make an extended bolt if you put it in a 1377? I was going to order other stuff from him anyhow; like flat top valve/piston, solid hinge pin, etc. Would his extended bolt probe and handle be mechanically different or just refined aesthetically? First time doing this, so lots to learn. I have only the long steel breech so far.

Crosman bolt is better than OEM but not as good as a real extended bolt.
https://mellonair.myfreesites.net/177-22-bolts
Just a thought...

Thanks, Wouldn't the Disco stock bolt make an extended bolt if you put it in a 1377? I was going to order other stuff from him anyhow; like flat top valve/piston, solid hinge pin, etc. Would his extended bolt probe and handle be mechanically different or just refined aesthetically? First time doing this, so lots to learn. I have only the long steel breech so far.

yes the Disco bolt is an "extended bolt" compared to a stock 1377 , but after that there are true extended bolts which imo do a better job and you have flow through bolts. Everyone has an opinion on which one is best, just do a little research and go with your own feeling. Personally I like the stainless ones that bill at magnum airpower have, but that's just my 2¢ I have others as well that work fine too.

[SwampHunter]

lol you beat me Rick, I had forgotten about Don's with the magnet, everything he has is nice!

[Rick67]

lol you beat me Rick, I had forgotten about Don's with the magnet, everything he has is nice!

SW sir, the magnet does not work though if you use one of his stainless breech rear caps.

It does ever so slightly, but I have used Crosman OEM rear caps, which I deburred and polished to make it look stainless.

DC's probe sticks to it (OEM) like magnet 

[BillK]

Agreed about Don Cothrens bolt with magnet.  It really is a useable/notable upgrade and the bolt extends the pellet past the transfer port.  Especially helpful holding the bolt open in a pistol.
I didn't mention the bushing & ring & solid pin for the pump arm.  I have a number of pump arm pins and like Daves Alchemy pins best.  However the bushing & ring from Mellon are used on all my pumpers.  The bushing tightens up the pump arm as does the ring which also extends the life of pump arm and pump pin.

[Van]

  I found the Mellon flow through bolt to work great on loading. It makes the pellet go straighter as it slips into the barrel past the port.  I did before and after FPS test verses the extended probe and they was no difference between them.  This was on a Disco tube build with a Magnum Air valve.  I plan to get a few more for other Crosmans as I really like the smoother loading. You can't beat the price of the stock Disco bolt though and is my second choice over the short nose ones.  The Mellon Pump arm spacer and bushing does improve the wiggle problem on Crosman pumpers.  I use them with a solid pin on model 2100, 66 and 1377 arms on my pumper builds.  I also have one on my 1971 Dan rebuild just for anti wear insurance.   

[Rick67]

Agreed about Don Cothrens bolt with magnet.  It really is a useable/notable upgrade and the bolt extends the pellet past the transfer port.  Especially helpful holding the bolt open in a pistol.
I didn't mention the bushing & ring & solid pin for the pump arm.  I have a number of pump arm pins and like Daves Alchemy pins best.  However the bushing & ring from Mellon are used on all my pumpers.  The bushing tightens up the pump arm as does the ring which also extends the life of pump arm and pump pin.

Yes, the bushings/rings should work well, although I do not have Melon parts, lol!

I use washers (2 works best but it depends on the thickness) on mine though in lieu of the ring and it works equally well for less $.

Ace Hardware has so many fasteners, screws, washers, etc., so just bring your pump arm lever pin for hole reference.

Once you install them washers, the side to side slop will magically disappear and your gun feel will much more solid as you pump it.

I learned this simple but very effective mod from CAPOF thru Senor Mudduck 

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Learned a lot here. Thank you, everyone.