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Jim Gillilan's Custom 1322 Carbine

Jim Gillilan's Custom 1322 Carbine w/Custom Stock

Here's one I'm especially proud of and is modded all over, doing 12fpe at 15 pumps.
Stock is Teak from Thailand and super light weight 1322 Carbine!

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Feasibility of Big Bore On 2240 or 2250(2400KT) Platform

May 3 2017 at 3:08 PM
Mario  (Login 1320Magnum)
Crosman Forum Member
from IP address 100.11.90.178

Hi Fellow arigunners!

I'm looking to get either another 2240 or a 240KT from CCS to Build a Big Bore on ....

...and what is Best Caliber for this is 9mm too Big & Probably a Gas Hog....?

How 'bout a 6.5 Cal or .30 Already Have .25 Cal.

Mario

 
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Scot Laughlin
(Login classicalgas)
Crosman Forum Member
50.159.8.234

A big bore pistol? You won't get a lot out of the 2240, unless you are willing

May 3 2017, 5:14 PM 

to spend a chunk of change for one of Cothran's servo valves.

For the home tuner building a big bore pistol over .25 or so, I'm fond of the QB78tube and valve mounted to a crosman grip frame

 
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WyoMan
(Login WyoMan)
Crosman Forum Member
174.22.60.178

I built one using the Cothran valve that Scot mentioned

May 3 2017, 5:55 PM 

Here's the thread to give you an idea:

http://www.network54.com/Forum/275684/thread/1465007403/last-1465254793/View+Thread

It did cost some, for sure. I didn't want to tank or bottle the gun so I stayed with co2 (for shot count)... still pretty lame but it makes 25 fpe ave with 10 or 11 good shots. Bio built a .357 pistol that was close to 100 fpe - iirc. Hope that helps..

Wyo

 


 
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Mario
(Login 1320Magnum)
Crosman Forum Member
100.11.90.178

Thanks Wyo!

May 5 2017, 5:20 AM 

for the Link to that Thread Also!

I'm just Wondering How far you can go On a 2240 or 2250 Platform!

I Might Have to drop a Line to Bio too!

Mario

 
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Mario
(Login 1320Magnum)
Crosman Forum Member
100.11.90.178

What's The O.D. on...

May 10 2017, 7:06 PM 

...Baker's Big Bore Breech?

I'm Guessing it'd Be a bit larger than The Usual Crosman Steel Breech, being used to accept a
.30 or 9mm Cal Barrel.

Mario

 
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WyoMan
(Login WyoMan)
Crosman Forum Member
65.131.44.47

The one I have was a perfect fit for a .500" barrel

May 12 2017, 7:29 PM 

The barrel mic'd at .500" o.d. within a thou and the fit with the breech was perfect - the barrel went in smooth with some resistance. Tolerances between the two were impressive!

Wyo


 
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Mario
(Login 1320Magnum)
Crosman Forum Member
100.11.90.178

I Meant The O.D. Of the Breech itself

May 15 2017, 12:40 PM 

What is Outside Demension (Width)of Breech ,Not Barrel hank O.D. .

I know The o.D. of Crosman Steel Breech is .750 , about same as the 13XX Tube Dia.! Is Baker's Big Bore Breech Same. Measurement?

Mario

 
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Wyo
(Login WyoMan)
Crosman Forum Member
65.131.40.107

Sorry, read it wrong... o.d. of breech is about .745" n/t

May 15 2017, 4:54 PM 



    
This message has been edited by WyoMan from IP address 65.131.40.107 on May 15, 2017 4:58 PM


 
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Jack Witas
(Login boomerdude)
Crosman Forum Member
73.61.23.200

I've built a 9mm and a .25cal.

May 4 2017, 1:20 PM 

and I'm working on a third right now. Cothran valves and tubes. One has a 9mm barrel liner from ToW and another has a .25 Big Bore set up from Baker. The latest will be a 12" LW .25 barrel and BNM Breech, Crosmods trigger, grip and forearm. The 9mm is 12" and too powerful for short range as it messes up the critters and 12" is too short for any accuracy past 25 yds. So the 9mm top end will go on the classifieds and I'll invest the proceeds into a MA 7.62 top end. I'm using the small TP Valve for the 12" LW and a large TP Valve for the 20" Baker barrels. If you make sure your valve retention screws are SS and tightened properly and your TP is well sealed, you shouldn't have any problems. I was surprised at the recoil with the 9mm. Much lighter than I expected.


    
This message has been edited by boomerdude from IP address 73.61.19.11 on May 5, 2017 10:22 AM


 
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robny
(Login robnewyork)
Crosman Forum Member
74.194.81.148

was the 9mm

May 4 2017, 8:03 PM 

a pcp .. ? I guess I missed that part.. What weere the numbers?

 
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Jack Witas
(Login boomerdude)
Crosman Forum Member
73.61.19.54

Re: was the 9mm

May 4 2017, 10:06 PM 

Yes, it's a PCP. Has a 2250 SS Cothran tube. Get's 8-10 shots per fill. I only got to measure a few shots on a friends chrony. At 2800 - 1700 psi 820,819,790 fps. with AV 118 gn round heads.

 
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Bio
(Login Biohazardman)
Moderator
71.236.167.69

Re: was the 9mm

May 5 2017, 7:23 AM 

Impressive power for a short barrel has to b fun. ;^)
I used to have a life. But now I have the forum. I am a sick man?

[linked image]

 
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robny
(Login robnewyork)
Crosman Forum Member
74.194.81.148

thats

May 5 2017, 7:47 AM 

insane power from a pistol. very cool!

 
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Bio
(Login Biohazardman)
Moderator
71.236.167.69

Re: Feasibility of Big Bore On 2240 or 2250(2400KT) Platform

May 5 2017, 7:18 AM 

This is a bit dated http://www.network54.com/Forum/275684/thread/1132852914 scroll down near the bottom of the page, think I got near 30fpe on carts higher on bulk co2 then took it to 1500 psi HPA after securing the valve good but don't remember the numbers. A kick in the pants to shoot they are but spendy pellets and only a few shots per cart or fill. Loopy trajectory but good for 30-35 yards the gun was stolen by the druggies though so never really got finished.
The more recent 9mm carbine/arrowgun combo was the 70-100+ fpe gun. http://www.network54.com/Forum/275684/thread/1451974649
http://www.network54.com/Forum/275684/thread/1454474336 Really light gun with the infamous Cothran valve which is better than anything I have built thus far. Others have done the 9mm and 30 cal. as well.
I used to have a life. But now I have the forum. I am a sick man?

[linked image]


    
This message has been edited by Biohazardman from IP address 71.236.167.69 on May 5, 2017 7:29 AM


 
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Jack Witas
(Login boomerdude)
Crosman Forum Member
73.61.19.11

Re: Feasibility of Big Bore On 2240 or 2250(2400KT) Platform

May 5 2017, 10:21 AM 

Yes, Don's valve is No. #1 in my book. Use to be B&N now Baker's Disco Power valve but I've built four guns using Don's valves and I haven't seen anything that compares to them. A 12-14" 9mm barrel on one of these valves makes for a powerful Wood's Walker pistol or Scout carbine.

 
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raneman
(Login ranedouglas)
Crosman Forum Member
96.40.42.68

yes

June 7 2017, 6:02 PM 

. i have a lathed down .25 trail barrel fitted into my 2400kt. 525 fps for around 22 shots with 20 grainers..... it's 12 ftlbs or more.

 
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