After a period of hesitancy RE: having another expendable (CO2 carts) to deal with, I finally bought myself a Crosman 2240 pistol. It was a decent price ($49 and change) thru Amazon, so I bought it as a Birthday present to myself.
Believe it or not, I've yet to run a single pellet thru the gun. A sequence of barely related events has kept me out of the "man cave" RE: doing even the most basic mods and the weather hasn't been conducive to outdoor shooting activities especially with a CO2 powered pellet gun.
Anyway, about a week ago I ordered a few parts from the Crosman Parts Dept/Custom Shop. These included: a 10.1" .177cal barrel, a muzzle brake, a bolt handle and a few other miscellaneous parts. I already had a steel breech for it. With any luck those should be here in a day or two.
I guess my plan is to make my 2240 into a "poor man's" 2300kt. Performance may not be the same BUT it will look darn close (to the untrained eye, at least). One of the reasons for doing this conversion was to save a bit of $$ on pellets since I have a lot more .177cal than I do .22 and the former are less expensive. The other reason was that I thought that since the .177 was smaller/lighter than the .22, I would get more shots per CO2 cart.
After some additional thought, I have the feeling that unless I do some valve related mods, the number of shots per cart may not change very much. The velocity tho, of the .177 pellet should be greater than that of the .22 pellet.
I'm sure that I'm not the first to do this modification. To those that have, what kind of changes in overall performance can I expect to see with a 3" longer, .177 cal barrel? I can and would do additional mods as needed. Thanks in advance for any and all replies. Flex
The speed will be up just because of the lighter and smaller pellet. Did you get a .177 bolt too? Shot count will be more than likelythe same uunless you reduce the volume of the valve. I think it is the 2300s that has a sleeve in the valve to get more shots but at the same time it is reducing power. If you're just plunking that could be an option.
Quote from: bgmcgee on December 16, 2013, 10:08:01 PM
The speed will be up just because of the lighter and smaller pellet. Did you get a .177 bolt too? Shot count will be more than likelythe same uunless you reduce the volume of the valve. I think it is the 2300s that has a sleeve in the valve to get more shots but at the same time it is reducing power. If you're just plunking that could be an option.
I do have a left over brass bolt from when I put the steel breech kit on my 1377. I drilled and punched the handle out and tapped the hole with 8-32 threads. RE: reducing the output of the stock valve, I thought about getting a pressure/power adjuster but I thought that $9 could buy quite a large selection of potential hammer springs, so I'll play with that for a while. Since punching holes in paper and aluminum cans is the primary activity, max power isn't currently an issue. Thanks. Flex
Save your money on that. I you just want to shoot cans and have alot of fun, buy a Makarov BB pistol. On a warm day, 110 shots out of a cart.
http://www.pyramydair.com/s/m/Makarov_CO2_BB_Pistol/1797 (http://www.pyramydair.com/s/m/Makarov_CO2_BB_Pistol/1797)
IMO. :-* :-*
But then you don't get to have a pile of parts on your bench ;D. What fun is that. Although I did get a lp8 bb pistol and it's a blast .
Quote from: bgmcgee on December 17, 2013, 04:01:57 AM
But then you don't get to have a pile of parts on your bench ;D. What fun is that. Although I did get a lp8 bb pistol and it's a blast .
Diana RWS LP8?
Quote from: mudduck48 on December 17, 2013, 05:09:28 AM
Diana RWS LP8?
Oops po8 got my numbers wrong . The legends Lugar bb pistol. I did get the chance to shoot a Diana lp8 a couple of months ago.It was brand new, first two pellets were in the same hole. Then my shooting went to crap but it's a nice shooter.
youcan turn you stock end cap into a power adjuster very easy if you have a drill press and tap and die set. just drill a hole thread it and polish a bolt to fit in it. that will make all the spring changess easy!
"Not sure that I thought it all the way thru."
Some advise:
I took about 2-3 yrs of looking on the "Green", here, there, everywhere for ideas to build a 1377 carbine. Ended up doing two. Now, as it stands, only have "Mr. Green" sitting in Carbine form while "Mr. Purple" is back in pistol form. Airgunning is a 1. Fun 2. Relaxing 3. Enjoyable sport and the 13xx/22xx line offers us so much "customization" we just have a blast with it. So don't stress over "not thinking it through"
I have a Custom Shop 2300, .177. Swapped out the hammer spring, put on a Melon Power Adjuster. In the summer time, I can sip 70 shots out of a Powerlet. Out of the Stock 2240 I more recently got, I get 40 good ones & it wants to stop after that. Take the time to learn what you have and do a little searching here - we have a TON of mod info if you have an evening or two to spend searching. Quickster47, SandSquid - that's just two I can think of that you'll find a load of info from the testing they did "way back when". The rest of the guys here have certainly added to it.
Don't sweat thinking you made a bad decision.
Quote from: onebaddj on December 18, 2013, 08:49:57 PM
youcan turn you stock end cap into a power adjuster very easy if you have a drill press and tap and die set. just drill a hole thread it and polish a bolt to fit in it. that will make all the spring changess easy!
I may just have to take a whack at making one of those. It just so happens that I'm pretty sure that a bench top drill press will be sitting under the Christmas in about a week :) ! I already have a tap & die set, so I should be good to go. I have read tho, that the power adjuster concept is often more trouble than benefit. I'll have to put a replacement end cap on the next order I make to Crosman, just in case I need to restore things to their original form.
BTW, I just today, received the order I placed with Crosman last week. I think that I have most everything to build my "knock-off" 2300kt. I'm particularly impressed with the bolt handle (nice satin nickel finish) and the muzzle brake (nice satin aluminum finish). I was surprised that the muzzle brake wasn't black in color. It's not drilled out like the options from the Custom Shop (except for the brass one), so I guess it's mostly ornamental. Anyway, it shouldn't be too long until the transformation is complete. I will, post the requisite photos. Until then, thanks for the replies. Flex
Cool deal. :-* Waiting for the pics. As far as the power adjuster I like mine on my 2300kt. I have it turned down a bit because I just shoot paper at 5 meters with it and have gained a few more useable shots.
Had no real excuse not to go ahead with my conversion, so I did and here's a brief recap:
Most everyone (here at least) knows what the stock 2240 looks like but this is for the 2 or 3 that don't-
(http://i1098.photobucket.com/albums/g362/topgas1/Air%20Guns/Air%20Pistols/DSCN5654.jpg) (http://s1098.photobucket.com/user/topgas1/media/Air%20Guns/Air%20Pistols/DSCN5654.jpg.html)
(http://i1098.photobucket.com/albums/g362/topgas1/Air%20Guns/Air%20Pistols/DSCN5653.jpg) (http://s1098.photobucket.com/user/topgas1/media/Air%20Guns/Air%20Pistols/DSCN5653.jpg.html)
I completely (except for the valve) disassembled the gun and cleaned the factory "preservative" off of the components. The pic doesn't show it but I did remove the frame cover to get to the trigger mechanism. I did a little "fluff & buff" RE: the trigger/sear linkage and NO I didn't lose the safety ball and spring (this time ;)).
(http://i1098.photobucket.com/albums/g362/topgas1/Air%20Guns/Air%20Pistols/DSCN5655.jpg) (http://s1098.photobucket.com/user/topgas1/media/Air%20Guns/Air%20Pistols/DSCN5655.jpg.html)
Just to class things up a bit, I re-bolted with stainless steel button head screws for the rear breech screw and the front and rear frame screws. I also replaced the stock black grip screws with SS ones. I removed the black paint from the die-cast aluminum trigger and polished it up. That maybe an ongoing process as I imagine that it will dull somewhat over time. The "nickel" bolt handle and the new muzzle brake along with the SS screws provide some nice contrast to the otherwise "basic black" of the gun. I think it looks pretty nice.
(http://i1098.photobucket.com/albums/g362/topgas1/Air%20Guns/Air%20Pistols/DSCN5657.jpg) (http://s1098.photobucket.com/user/topgas1/media/Air%20Guns/Air%20Pistols/DSCN5657.jpg.html)
Since it's an option with a custom shop gun, I mounted up a Crosman "Red Dot" that I had on my garage sale 760. Not sure if it's going to stay there tho. Just thought I'd see what it looked like.
(http://i1098.photobucket.com/albums/g362/topgas1/Air%20Guns/Air%20Pistols/DSCN5659.jpg) (http://s1098.photobucket.com/user/topgas1/media/Air%20Guns/Air%20Pistols/DSCN5659.jpg.html)
(http://i1098.photobucket.com/albums/g362/topgas1/Air%20Guns/Air%20Pistols/DSCN5658.jpg) (http://s1098.photobucket.com/user/topgas1/media/Air%20Guns/Air%20Pistols/DSCN5658.jpg.html)
So there you have it! Still need to tweak (not twerk) a couple of things. The brass bolt / "nickel" bolt handle combo seems to hang up in the steel breech. I'm hoping that it will smooth out with repeated locking and unlocking. I did replace the stock hammer spring with a "lighter" one per my plan to reduce the power a bit and conserve CO2 but it may be too "light". We'll see the first time I shoot. Good thing it's quick and easy to swap out the hammer spring.
Comments welcome. Flex
Nicely done. You know this is only the beginning for that pistol. It will likely go through many iterations in the future.
Looks good. :-* Larry is right too, this is just the beginning.
Nice start ... :-*
Basic black is a good look. It makes even the smallest screw head POP. :-*
I kind of hate to say it but I'm thinkin' that the Crosman "Red Dot" sight is going to have to go. It doesn't
really add much weight but it makes the pistol look bulky and appear top-heavy. I've already started workin on modifying a stock rear sight to fit the steel breech. The peep/notch piece will require some modification in order to clear the breech plug but that shouldn't be much of a problem. Pics to follow as the mod progresses. Flex
Quote from: Flex on December 23, 2013, 05:27:41 AM
I kind of hate to say it but I'm thinkin' that the Crosman "Red Dot" sight is going to have to go. It doesn't
really add much weight but it makes the pistol look bulky and appear top-heavy. I've already started workin on modifying a stock rear sight to fit the steel breech. The peep/notch piece will require some modification in order to clear the breech plug but that shouldn't be much of a problem. Pics to follow as the mod progresses. Flex
I saw that somewhere. the person got a longer screw and put washers in between the sight blade and the sight body to extend the sight blade out to mill the breech plug.
Quote from: mudduck48 on December 23, 2013, 05:58:58 AM
I saw that somewhere. the person got a longer screw and put washers in between the sight blade and the sight body to extend the sight blade out to mill the breech plug.
I did look at that possibility and may end up doing just that. It does move the sight blade out of the stabilizing slot but that may not be a huge issue. Flex
Nice job Flex. I'm hoping to do the same thing one of these days.
Quote from: Flex on December 23, 2013, 06:29:27 AM
I did look at that possibility and may end up doing just that. It does move the sight blade out of the stabilizing slot but that may not be a huge issue. Flex
Hi Flex,
this is what I did to mine:
(http://i1249.photobucket.com/albums/hh508/WyoMan/1322Mag/sight2_zpsc8abc357.jpg) (http://s1249.photobucket.com/user/WyoMan/media/1322Mag/sight2_zpsc8abc357.jpg.html)
a little work with the dremel cutoff wheel, grinder and sandpaper....have to choose if you want the slot or the peep...best wishes :-*
Nice job on the mods Flex! ;)
I bought a 2240 as a base for my bulk feed Beast rifle, now I have a trigger frame and a 2240 tube. I was thinking of a 12 gram pistol in .177...12" barrel and 12" shroud. The extra 3" gained on the full-length shroud with a long aluminum breech/riser should make it neighbor friendly.
The others are correct...you may go thru many changes with your new build, my 1377 build from last year is STILL being changed here and there.
You know when you start to change anything on ANY Air Gun , you just can't STOP !!! ;D ;D ;D
I am in the prosess of changing one of my 2240 into a carbine with a .177 cal. barrel of 24 inches. Going to put one of Davio's RP valves in it too!
Quote from: WyoMan on December 23, 2013, 09:14:11 PM
a little work with the dremel cutoff wheel, grinder and sandpaper....have to choose if you want the slot or the peep...best wishes :-*
I have several sight blades now. I can afford to sacrifice one and cut the opposite end off to have one with the notch and one with the peep :-*.
WyoMan, I don't know for sure but I'm guessing that the breech in the pic isn't one direct from Crosman. I don't see the sight mounting notch like my Crosman steel breech has. Did you mill the underside of the stock sight to match up with the 3/8" scope mount milled into the top of the breech? How do you adjust for windage? Did you chrome plate the breech and tube or are they polished steel? It definitely looks nice :-*! Flex
Thanks Flex...
the breech is stainless steel from Cothran:
http://www.cothranmachine.com/ (http://www.cothranmachine.com/)
the pump tube is nickel plated from GMAC:
http://www.gmaccustomparts.com/ (http://www.gmaccustomparts.com/)
and I did cut dovetails in the oem sight to secure to the breech
you're right about the windage adjustment...it is limited but you might be able to get some by making the metal slot a little wider
mine pretty much lined up ok
Most everyone (here at least) knows what the stock 2240 looks like but this is for the 2 or 3 that don't-
:o oh ... that is what it looks like ................. ;D
Flex, I just finished putting one of these together for the sole purpose of shooting the monthly comps, and getting the most shots out of a cart. On the sight issue, I sanded the bottom of the stock rear sight, cut it across the base where the Crosman steel breech has the rectangular notch so it would sit in it, and kept sanding on the rear part of the sight until I go a nice fit that sat fairly flat. The notch blade was simply bent slightly back to clear the breech plug, then added two green fiber optic tubes, found the gun was shooting several inches high at 10M, lowered the rear sight more, then ended up just adding a piece of orange fiber optic tube to the top of the front sight, and it came into range. Hope that maybe helps some, I'll get you the length of the piece of 45 ACP brass case I cut off to use as a valve reducer. Hey it was free, and worked just like the 2300 piece. OK, had a minute and found the measurement, the piece I cut off the 45 ACP brass is .41" long. I took one of the "newer pieces of 45 brass, the ones someone thought it would be a good idea to use small primers in, and cut off the .41" length, it fits perfectly inside the valve, no obstruction, and reduces the volume just that extra little bit. And as a quick reference I cut three coils off a stock hammer spring so far, as I'm just using the stock end cap, and no adjuster. We are most likely working towards the same goal, a self regulating CO2 pistol. I read Rsterne, and Alstones posts regarding this topic over on Airgun home. They both managed to get to the point where you can get 70 + usable shots within about 20 FPS total spread. Hope this helps you out, I'm still tuning mine.
Casey
Quote from: Rualert on December 29, 2013, 07:17:38 PM
On the sight issue, I sanded the bottom of the stock rear sight, cut it across the base where the Crosman steel breech has the rectangular notch so it would sit in it, and kept sanding on the rear part of the sight until I go a nice fit that sat fairly flat. The notch blade was simply bent slightly back to clear the breech plug, then added two green fiber optic tubes, found the gun was shooting several inches high at 10M, lowered the rear sight more, then ended up just adding a piece of orange fiber optic tube to the top of the front sight, and it came into range. Hope that maybe helps some, I'll get you the length of the piece of 45 ACP brass case I cut off to use as a valve reducer. Hey it was free, and worked just like the 2300 piece. OK, had a minute and found the measurement, the piece I cut off the 45 ACP brass is .41" long. I took one of the "newer pieces of 45 brass, the ones someone thought it would be a good idea to use small primers in, and cut off the .41" length, it fits perfectly inside the valve, no obstruction, and reduces the volume just that extra little bit. And as a quick reference I cut three coils off a stock hammer spring so far, as I'm just using the stock end cap, and no adjuster. We are most likely working towards the same goal, a self regulating CO2 pistol.
Casey
Last week I did almost exactly what you described to fit my OEM sight to the Crosman steel breech.
(http://i1098.photobucket.com/albums/g362/topgas1/Air%20Guns/Air%20Pistols/DSCN5666.jpg) (http://s1098.photobucket.com/user/topgas1/media/Air%20Guns/Air%20Pistols/DSCN5666.jpg.html)
(http://i1098.photobucket.com/albums/g362/topgas1/Air%20Guns/Air%20Pistols/DSCN5664.jpg) (http://s1098.photobucket.com/user/topgas1/media/Air%20Guns/Air%20Pistols/DSCN5664.jpg.html)
The bottom of the sight blade DOES touch the breech plug but just barely. I too, thought of putting a slight bend to the blade so it clears. Doesn't seem to be absolutely necessary tho.
I'd be interested in seeing pics of the fiber optic tube mod you describe. The brass sleeve "volume taker-upper" intrigues me also. A couple of pics would be nice. I've yet to test the effectiveness of the weaker hammer spring. I think that there is going to be a bit of "trial and error" on that mod. Thanks for the input. Flex
Dog gone, that looks really good. That is what we are all about, thinking outside the box. Make it work with what we have. Nice. ;)
Flex, her's a few pictures of the valve reducer, and the sights with the fiber inserts. Hope they help, as I understand a picture is worth the thousand words they always talk about. :) By the way, very nice job on your sight modification to fit on the steel breech. Not sure why Crosman doesn't just make them so they drop on, but that would stop some from just making it work I guess.
Front Site:
(http://s5.postimg.org/wbhmixdyf/Front_Sight_Closeup_001.jpg) (http://postimg.org/image/xdrt1gwrn/full/)
pc screenshot (http://postimage.org/app.php)
Front Site from the side:
(http://s5.postimg.org/ivulth5gn/Front_Sight_Side_View_001.jpg) (http://postimg.org/image/6tz7zbw83/full/)
print screen windows (http://postimage.org/app.php)
Rear Site:
(http://s5.postimg.org/koxihsqnb/Rear_Sight_Rear_View_001.jpg) (http://postimg.org/image/jmnbz97tv/full/)
screenshot windows 7 (http://postimage.org/app.php)
Rear Site Top View:
(http://s5.postimg.org/n7j7ihcdj/Rear_Sight_Top_View_001.jpg) (http://postimg.org/image/txzorwzj7/full/)
screen shot (http://postimage.org/app.php)
Valve Reducer-01:
(http://s5.postimg.org/hkmul09uv/Valve_reducer_01.jpg) (http://postimg.org/image/e10wv774z/full/)
how to do a screen shot (http://postimage.org/app.php)
And another of the reducer:
(http://s5.postimg.org/avgb4zoiv/Valve_Reducer_002.jpg) (http://postimg.org/image/p1w207zdv/full/)
screen grab (http://postimage.org/app.php)
I only use the piece that was cut off the 45 ACP case obviously, not sure how much it helped in regard to reducing gas usage, as I still need to do a full shot count from a fresh cart.
Casey
Quote from: Rualert on January 08, 2014, 04:12:27 PM
Rear Site:
(http://s5.postimg.org/koxihsqnb/Rear_Sight_Rear_View_001.jpg) (http://postimg.org/image/jmnbz97tv/full/)
screenshot windows 7 (http://postimage.org/app.php)
Rear Site Top View:
(http://s5.postimg.org/n7j7ihcdj/Rear_Sight_Top_View_001.jpg) (http://postimg.org/image/txzorwzj7/full/)
screen shot (http://postimage.org/app.php)
Casey
OOOH! I'm really likin' those fiber optic additions to the sight blade. Definitely going to give that mod a try!!!
RE: reducing the valve volume with the bras sleeve, I'm not seeing how there would be much of a reduction in volume using the cut off piece of .45 cal case ??? I think that putting something with a little more wall thickness might have more effect. Be sure to post your shot count data once collected. Thanks for the pictorial. Flex
Those sights look great Casey! :-*
I'll have to do that to mine one of these days, where did you get the fiber optic pieces?
OK for Flex, I totally agree with you on the thickness of the brass sleeve, but that was all I had around at the time I put it together. And Tater, believe it or not it's just trimmer line! 8) Had some left over green and red, the green was the smaller stuff, so just drilled the two holes in the site blade, applied a little heat to the trimmer line via a good old bic lighter, and pressed into place. Front just cut a piece of slightly larger red to match the width of the sight better, and epoxied it on. By the way since I received a nice new drill press for the holidays drilling those types of holes in a sight blade will be much easier now.
Casey
Great work on the sites :-* :-*
Wow, I would have never guessed trimmer line. Pretty darn creative use for it.