2240 XL Stubby

[Back_Roads]

 I got to working on my 2240 stubby build today, I did it the hard way and shortened the breach end of a 2240 XL barrel, So that added some extra machining to get the probe seal and barrel port aligned.
 I gave it the ice maker transfer port, need to locate a thin 1/2 20 fitting for the thread protector, ATM I have a black plastic tube over the threads.
 Still looking into sighting options, may be intretwined with the thread protector , but I am able to consistently hit 2" spinners at 7 yards. Oh and it really likes H&N .218 21 gr. slugs. 
 Will do some crony strings with it tomorrow and report back. . . also get into the trigger, that is not too bad on this example

[avator]

Lookin good James.

[TheOtherSprocket]

This might be in another topic but can you talk about the process of working on the breech end of the barrel?

[avator]

I got to working on my 2240 stubby build today, I did it the hard way and shortened the breach end of a 2240 XL barrel, So that added some extra machining to get the probe seal and barrel port aligned.
 I gave it the ice maker transfer port, need to locate a thin 1/2 20 fitting for the thread protector, ATM I have a black plastic tube over the threads.
 Still looking into sighting options, may be intretwined with the thread protector , but I am able to consistently hit 2" spinners at 7 yards. Oh and it really likes H&N .218 21 gr. slugs. 
 Will do some crony strings with it tomorrow and report back. . . also get into the trigger, that is not too bad on this example

Yeah, that's definitely the hard way.

[Back_Roads]

 Measure 3 times drill once I used the steel breach to mark the barrel port hole, and the breach needed to be opened up to accept the bolt probe and seal the oring, with slight resistance as the probe oring seats against the un milled id of the barrel.
 TP size is up to the builder, I will post the drill size for counter boring the breach end next trip to the workshop.

[avator]

James, what was your reason for using that end of the barrel?

[Rick67]

James, what was your reason for using that end of the barrel?

Yeah, I'm wondering too.

It's not a LW with a choked muzzle.

All my LW Crosman barrels have really tight chokes.

[Back_Roads]

 I wanted to keep the pressed on threaded adapter  Also gave me the option to get a precise fit for the probe oring, the bolt locks down and does not jump.
 The barrel came of my 2240 XL that I turned into a bottle franken gun.

 I filled the gun with Helium that's why it is floating upside down

[Rick67]

I wanted to keep the pressed on threaded adapter  Also gave me the option to get a precise fit for the probe oring, the bolt locks down and does not jump.

Makes sense 👍

[Blacktalon6]

I like it. Keep open sites on it. A pistol is not made for shooting at 100 yards.

[Back_Roads]

 I found my stash of fancy Magnum Air breach screws and added one to the build, still searching for the perfect sights for this, I do have a few options that will work but not what I want.
 Shot some slugs over the crony, a solid 350+ FPS May look into a flow through bolt 21 gr. H& N .218 gr. lugs also are perhaps a smidge undersized but shoot well.
 I Compared crony to crosman domed and got 400+ FPS with those.

[Back_Roads]

This might be in another topic but can you talk about the process of working on the breech end of the barrel?

I mounted the barrel in a vise in a drill press and bored it out with a 1/4" drill bit, to a depth of approx 1/4" depth may vary, to exact fit to breach,
 I Put the barrel in the breach to center punch a mark, then drilled the tp hole I go small first incase it gets off center if if so ther eis wiggle room when going the next size up to make adjustment.
 I used aggressive rubber grinding bits on the Dremel to make a new lead and smooth out tool marks. I followed with finer grits and then also did a pull through polish with fine compound to finish.

[2A Georgia]

I found my stash of fancy Magnum Air breach screws and added one to the build, still searching for the perfect sights for this, I do have a few options that will work but not what I want.
 Shot some slugs over the crony, a solid 350+ FPS May look into a flow through bolt 21 gr. H& N .218 gr. lugs also are perhaps a smidge undersized but shoot well.
 I Compared crony to crosman domed and got 400+ FPS with those.

Thank you sir I guessed 350fps.  Others have busted nutters with this Co2 and slugs.  Down the rabbit hole I go 

[Spacebus]

I love these builds. I might have to do another! Is that the OEM XL muzzle brake?

[Back_Roads]

I love these builds. I might have to do another! Is that the OEM XL muzzle brake?

Yes it came of the XL I turned into a .25 carbine

[TheOtherSprocket]

This might be in another topic but can you talk about the process of working on the breech end of the barrel?

I mounted the barrel in a vise in a drill press and bored it out with a 1/4" drill bit, to a depth of approx 1/4" depth may vary, to exact fit to breach,
 I Put the barrel in the breach to center punch a mark, then drilled the tp hole I go small first incase it gets off center if if so ther eis wiggle room when going the next size up to make adjustment.
 I used aggressive rubber grinding bits on the Dremel to make a new lead and smooth out tool marks. I followed with finer grits and then also did a pull through polish with fine compound to finish.

Thank you for the follow up - is the 1/4" bore to allow the bolt to feed?  I followed the rest.  Nice work.

[Spacebus]

I love these builds. I might have to do another! Is that the OEM XL muzzle brake?

Yes it came of the XL I turned into a .25 carbine

Are there any other threaded adapters that fit on a stubby barrel? It would be nice to have an indoor friendly CO2 pistol that is still short.

[Rick67]

I love these builds. I might have to do another! Is that the OEM XL muzzle brake?

Yes it came of the XL I turned into a .25 carbine

Are there any other threaded adapters that fit on a stubby barrel? It would be nice to have an indoor friendly CO2 pistol that is still short.

The Donny FL for the Disco with its concave belly.

$40 + shipping though and too much, IMHO, but it appears to be a bit longer compared to others.

[TheOtherSprocket]

The Donny FL is what I'll use when the funds come in - that said yo can get an adapter from crosman for about $10 plus shipping - like the one on th XL barrels - slip on but needs some retention, tape or something to keep it fixed.

[SwampHunter]

I love these builds. I might have to do another! Is that the OEM XL muzzle brake?

Yes it came of the XL I turned into a .25 carbine

Are there any other threaded adapters that fit on a stubby barrel? It would be nice to have an indoor friendly CO2 pistol that is still short.

The Donny FL for the Disco with its concave belly.

$40 + shipping though and too much, IMHO, but it appears to be a bit longer compared to others.

I like those because the Disco sight fits on top, I'm trying to decide now between one of those or a regular disco sight, a suppressor option would be nice. I wonder if it could be drilled out to be a bit shorter? I'll check mine when I have a chance