GTA
Airguns by Make and Model => Crosman Airguns => Topic started by: woogie_man on May 02, 2013, 10:10:04 AM
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Hey guys I am fairly sure that I know the answer, but wanted to run it past you guys to make sure that I have my ideas going the correct way...
I am looking at building a compact carbine rifle that I can toss in a backpack and take with me just about anywhere. I was looking at either the 13xx or the 22xx ( both in the .22 version ). I already have a 1377 as well as a few spare parts for that as well as the 22xx. I would like to have a .22 as I have a ton of pellets and nothing to shoot them with. In the box of parts that I have I found a steel long breech and was planning on using this for the build. Being as I will have to find a barrel for the build I am under the impression that the breech is the same for both the 22 and the 177 pistols....correct?
And if so what is a good place to find barrels in stock? Would love to find a LW barrel, or something close to that for the accuracy....but not looking to spend a load on it.
Any help or ideas would be greatly apperciated!
Thanks guys.
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Steel breech's can have the small screw (4-48) in the aft (under the bolt) or forward position. The aft screw position will not work on the 13xx guns, as they do not have a hole in the air tube there. A .177 or .22 bolt will fit in either breech.
You should check out the Crosman custom shop, you can build your own 2400 carbine with any length barrel up to 18" in .177 or .22 cal.
http://www.crosman.com/ (http://www.crosman.com/)
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Yup, the first place I would look for a new barrel was the Crosman custom shop! ;)
CW
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Bryan and Associates has barrels 7" to 24" for $29
http://www.airgunbna.com/ (http://www.airgunbna.com/)
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Thanks for the links guys.
As much as I would like the custom shop, would love to build it all myself. That and trying to find the parts and make something that I have in my basement already.
And is there anyone making an all in one valve and drop down for the 22xx rifles?
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Barrels available from Crosman parts dept. copied from a list on Crosman Air Pistol Owners Forum. You can also check the GTA Mall for a list of aftermarket suppliers.
.177 (4.5mm)
Length Original Gun Crosman P/N
7.5" 1740 Only 1740-002
10.1" 2300T 2300-001
10.25" 1377 1377-025
10.1" L/W Match2300 2300-102
24" 1760 1760-001
.22 (5.5mm)
Length Original Gun Crosman P/N
7.5" 2240 Only 2240-002
10.25" 1322 1322-064
14.5" 2289 2289-001
14.5" 2250B 2250-019
18" 2400 2400-102
24" 2260 2260-003
18 " 2250XE 2400-006
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Barrels available from Crosman parts dept. copied from a list on Crosman Air Pistol Owners Forum. You can also check the GTA Mall for a list of aftermarket suppliers.
.177 (4.5mm)
Length Original Gun Crosman P/N
7.5" 1740 Only 1740-002
10.1" 2300T 2300-001
10.25" 1377 1377-025
10.1" L/W Match2300 2300-102
24" 1760 1760-001
.22 (5.5mm)
Length Original Gun Crosman P/N
7.5" 2240 Only 2240-002
10.25" 1322 1322-064
14.5" 2289 2289-001
14.5" 2250B 2250-019
18" 2400 2400-102
24" 2260 2260-003
18 " 2250XE 2400-006
Sweet. I was looking for just such a list. Thanks, Dave. By the way, I see you have a 2240 in both 22 and 177. I am planning to either build another 2240 in 177 or convert the one I have to 177. Did you notice any difference in velocity and CO2 usage between the two calibers? Is it worth doing?
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I thought I would try a 10.25" .177 barrel I had on this 2240. It didn't seem to make a difference in Co2 usage, and I don't have a chrony, but it seems to have plenty of punch. It is very accurate with RWS R-10 pellets at 5 & 10 meters. I've ordered a 24" .177 barrel that I'm going to cut down to 12" or 14" to try on it. I have done so many mods on this now that I had enough parts to build a stock 2240, that's why I have two now. ;D ;D
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Barrels available from Crosman parts dept. copied from a list on Crosman Air Pistol Owners Forum. You can also check the GTA Mall for a list of aftermarket suppliers.
.177 (4.5mm)
Length Original Gun Crosman P/N
7.5" 1740 Only 1740-002
10.1" 2300T 2300-001
10.25" 1377 1377-025
10.1" L/W Match2300 2300-102
24" 1760 1760-001 Discontinued part and number as per Crosman 5/6/13
24'' Disco 1760SE-001
.22 (5.5mm)
Length Original Gun Crosman P/N
7.5" 2240 Only 2240-002
10.25" 1322 1322-064
14.5" 2289 2289-001
14.5" 2250B 2250-019
18" 2400 2400-102
24" 2260 2260-003
18 " 2250XE 2400-006
I just edited the chart for PN change on the 24'' .177 barrels form Crosman
CW
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I thought I would try a 10.25" .177 barrel I had on this 2240. It didn't seem to make a difference in Co2 usage, and I don't have a chrony, but it seems to have plenty of punch. It is very accurate with RWS R-10 pellets at 5 & 10 meters. I've ordered a 24" .177 barrel that I'm going to cut down to 12" or 14" to try on it. I have done so many mods on this now that I had enough parts to build a stock 2240, that's why I have two now. ;D ;D
I just bought a .177 24'' Disco barrel for my 1377. By cutting it at 17'', I will have 7'' take off and will modify that to fit as a replacement barrel on the 2240 so I can shoot .177 from it!!
CW
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I thought I would try a 10.25" .177 barrel I had on this 2240. It didn't seem to make a difference in Co2 usage, and I don't have a chrony, but it seems to have plenty of punch. It is very accurate with RWS R-10 pellets at 5 & 10 meters. I've ordered a 24" .177 barrel that I'm going to cut down to 12" or 14" to try on it. I have done so many mods on this now that I had enough parts to build a stock 2240, that's why I have two now. ;D ;D
I don't have a chrony either. Would be interesting to see what the 177 steps out at compared to the 22. I was hoping to stretch CO2 usage out a bit by changing out calibers.
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I thought I would try a 10.25" .177 barrel I had on this 2240. It didn't seem to make a difference in Co2 usage, and I don't have a chrony, but it seems to have plenty of punch. It is very accurate with RWS R-10 pellets at 5 & 10 meters. I've ordered a 24" .177 barrel that I'm going to cut down to 12" or 14" to try on it. I have done so many mods on this now that I had enough parts to build a stock 2240, that's why I have two now. ;D ;D
I don't have a chrony either. Would be interesting to see what the 177 steps out at compared to the 22. I was hoping to stretch CO2 usage out a bit by changing out calibers.
From all that I have read, you WILL achieve that goal!
CW
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I'm at a loss as to thinking changing to a smaller pellet will increase co2 output when you are still using the same valve volume? I would be interested to how this works.
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I'm at a loss as to thinking changing to a smaller pellet will increase co2 output when you are still using the same valve volume? I would be interested to how this works.
Good point. I'm still learning this stuff. I was thinking that going with a smaller pellet would decrease the amount of CO2 needed to propel the pellet and thus getting more shots per cartridge. But I can see that is not the case if nothing is done to the valve. Actually it would seem that CO2 is being wasted, or is it resulting in increased velocity? Am I way off here?
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I have both a 2300kt which is .177 and the 2240 they both run the same valves and I get a couple of more shots with the .177 but I only think that's because the pellets are half as heavy if that makes sense to you.
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I have both a 2300kt which is .177 and the 2240 they both run the same valves and I get a couple of more shots with the .177 but I only think that's because the pellets are half as heavy if that makes sense to you.
Makes sense. So I am probably going to revert my 2217 to a 2240. It was shooting very well as I originally had it configured. Should have listened to the old adage 'If it ain't broke, don't fix it!'
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I'm posting this so I can find these part nos. next month when we get back to the 'home ranch'.
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Well, we're back at the 'home ranch'. So, there's not a 12-14.5" Crosman .177 barrel for a 1377 mod? :-\
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You can get one any length from a vendor, such as Mountain Air or Mellon -(has backlogs that can make for a long wait).
Crosman only makes these sizes.
.177 (4.5mm)
Length Original Gun Crosman P/N
7.5 2240 Only 1740-002
10.25 1377 1377-025
10.1 2300s LW Match 2300-102
24 1760 1760-001
24 Disco 1760SE-001
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Greg,
You can get one of the 24" and cut it to any desired length, crown it, with a hacksaw, hand file, hand drill/ slotted screw (for crowning), blueing pen.
Easy stuff.
Daveb50,
what is the difference between the two 18" .22 barrels ?
18" 2400 2400-102
18 " 2250XE 2400-006
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Greg,
You can get one of the 24" and cut it to any desired length, crown it, with a hacksaw, hand file, hand drill/ slotted screw (for crowning), blueing pen.
Easy stuff.
Without a lathe and/or a machine shop, how do you crown a barrel. I've got the hacksaw part figured out. ::)
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https://www.pyramydair.com/blog/2011/03/recrowning-the-benjamin-nitro-piston-air-rifle/ (https://www.pyramydair.com/blog/2011/03/recrowning-the-benjamin-nitro-piston-air-rifle/)
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Hey Greg,
I'm having some problems with video on my computer tonight, so I can't seem to post up one for you. There are MANY examples on youtube that you can see if you just search DIY Barrel Crowning , or just, Barrel Recrowning.
there are a few different ways from using a dremel tool with fine, finer, finest conical or round stones, then finishing up usually with a brass screw used in a drill motor with some valve lapping compound.
clean, then test for burrs on the rifleing using a Q-tip. Maybe someone here can post up one of the MANY vids on it.
I just don't know what's wrong with my 'puter tonight.
Probably have to take it over to my teenaged computer guru Mr fix-it kid.
No doubt he will come back telling me it is a simple "ID-ten-T" user problem. LOL!
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Hi Greg,
Like Ron said, there are a lot of videos on Youtube showing how to do it. It's worth searching just to see some different tools and methods.
Most of the ones I've seen are at one end of the spectrum or the other. Meaning either done freehand or with expensive tools and fixturing. I simply don't trust doing it freehand because getting a perfect perpendicular result is practically impossible. And I don't have a precision lathe or a purpose-built crowning tool.
But what I do have is a drill press and a Dremel tool, and with them I can get a very good crown. Here is a little writeup that describes how I do it.
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I have a hand held dremel that has a bit that is kind like a hard chalky substance. I just stick it on the crown and it bevels it nice and smooth. Most guys chuck a round head brass bolt and use a lapping compound, but this way I don't have to buy lapping compound.
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Thanks, guys. I reckon I'll have to find something else to worry about.
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Greg, what's that? Do you mean you're up to it or you don't think you can do it?
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Woogie, I have seen 24" barrels for sale that are NIB on ebay. The last time I checked a 24" cost about $45.00.
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Woogie, I have seen 24" barrels for sale that are NIB on ebay. The last time I checked a 24" cost about $45.00.
Or you can order them from Crosman for under $25 shipped.
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Greg, what's that? Do you mean you're up to it or you don't think you can do it?
I can do it.... All I need is a barrel to practice on and I should have that this week.
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Nice, let us know how it works out for you.
Tomorrow I am planning to order a 24in .177 cal barrel and steel breech to convert my 2289. Other than recrowning it, I want to try it at the full length for a while and see how I like it. The gun already has some simple internal power mods, and I think the boost in velocity from the longer barrel will make it a good lightweight pesting carbine, provided I can find a pellet it likes well.
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Nice, let us know how it works out for you.
Tomorrow I am planning to order a 24in .177 cal barrel and steel breech to convert my 2289. Other than recrowning it, I want to try it at the full length for a while and see how I like it. The gun already has some simple internal power mods, and I think the boost in velocity from the longer barrel will make it a good lightweight pesting carbine, provided I can find a pellet it likes well.
Don't forget you have to get a .177 bolt probe and o-ring. That's the only problem for me. I want to convert my 2400 to .177 but I don't know what the part numbers for the .177 probe and o-ring are, or if Crosman even sells the probe and o-ring.
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Chris,
Assuming you're talking about the bolt and O-ring for the steel breech (not the stock plastic breech), have a look at the Discovery parts list:
http://www.crosman.com/pdf/manuals/BP1K77xx%20&%20BP9M22xx%20EVP.pdf (http://www.crosman.com/pdf/manuals/BP1K77xx%20&%20BP9M22xx%20EVP.pdf)
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Chris,
Assuming you're talking about the bolt and O-ring for the steel breech (not the stock plastic breech), have a look at the Discovery parts list:
http://www.crosman.com/pdf/manuals/BP1K77xx%20&%20BP9M22xx%20EVP.pdf (http://www.crosman.com/pdf/manuals/BP1K77xx%20&%20BP9M22xx%20EVP.pdf)
Thanks. I'll see what I can do.
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TTT, please.
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OP..if you're trying to save money a LW barrel may be too much. crosman doesn't sell aLW .22. they do sell 2 LW barrels not on the previously posted list. both are .177 though. one for the new challenger, i just bought two of those today from crosman $189. the other for the maurader pistol..1720 i believe-a 12" LW.
peace
kj