2240 vs 1740? (apple to apples)

[Hoosier Daddy]

With these long cold winter nights, I am dreaming of my next build.
I REALLY like my 2300KT in .22. And am digging the accuracy of my assorted .177's shooting indoors.
So that got me thinking of building a 1740.
As a starter... I have a 10.1" barrel and 177 bolt I took off my 1377 laying here collecting dust. If I were to buy a bone stock 2240, put that barrel on and bolt in the plastic breech to make a 1740, is it fair to say it is going to be more accurate all other things being equal?
 
Yes... mods are definitely in the future... but this time will be more towards accuracy, not power. I have learned you don't need blistering speed to be a tack-driver.

[maraudinglizard]

Oh yeah, light that wallet up. That should keep you warm for few days.

[longhunter]

you'll also need a smaller t-port. the one in the 2240 is way too large for.177. you'll be wasting a lot of gas. a lighter hammer spring wouldn't hurt, either.

[tennx]

I did the very same thing,sweet little gun..., buddy liked it so much he traded me an old mossberg pump for it.....and I turned around an got a 2300KT in 177 .....good luck

[RobertMcC]

Ive done it before. Actually planning on doing it again. Find a UK or CAD Transfer port from a 1377. Its like .089.

Being primary indoors. I lowered the FPS and I was able to get over 140 shots from 1 Co2.

[Hoosier Daddy]

Oh yeah, light that wallet up. That should keep you warm for few days.

BWA-HA-HAAA!
You know me too well Sister! BUT... I got Christmas gift cards burning a hole in my wallet now.
Good to know about the TP.. Little at a time I keep telling myself. A power adjuster and a steel breech would but next.

[45Bravo]

Having modded many 2240's in .22 & .177.
After looking back hard on what I liked and disliked about each of them, I Made this one with the things I liked about each of them.

.177, 10 inch barrel, TKO, rear velocity adjuster, lighter hammer, P-rod trigger group, and a 3moa red/green dot.

The perfect pesting and plinker gun, crank the velocity up to right at 600 fps with 7.9gr pellets for pest,
or crank it down to 375 fps with wadcutters and over 100 shots per cartridge for poking holes in paper and soda cans.

Of all my pistols, it is the most versatile.

[screwwork]

Nice looking pistol Ian
Who's sight are you using? I have a Barska that I use occasionally on my pistols and the red dot isn't the best...

[Blue]

A 1740 was my winter project last year.  As far as being more accurate, I would say it depends on the barrel.  I decided to go with Crosman's 10.1" .177 Lothar Walther.

I took the stock 2240 I used in Bob Sterne's 2240 Leap Year SSG challenge last winter and added a steel breech from the parts bin, an extended probe bolt, and the LW barrel to make a sweet target shooter.



Blue

[rsterne]

Yep. it's a brilliant conversion, I have one.... You don't need to change the porting, just shorten the hammer spring until the velocity just starts to drop.... You'll save at least half the CO2 and still have the same power....

Bob

[Hoosier Daddy]

 Ian: You read my mind almost to a "T"...
Where did you get that power adjuster? I have seen it somewhere but can't find it now...I was going to get an aluminum one from Davio at Alchemy.
I have a TKO and a BSA Red Dot on my 2300KT and love it.
I already have other bobbles here, am working on an air stripper for a Crosman sized barrel from bits I have from work...
First things first, I need to get the gun then I can start.


Blue: Darn nice one there!

You don't need to change the porting, just shorten the hammer spring until the velocity just starts to drop.... You'll save at least half the CO2 and still have the same power....

Thanks Bob!

[45Bravo]

The power adjuster is from a crosman challenger.
The dot is a Chinese one with a small (3-4 moa) very nice clear dot, no blooming or smearing.


And I use this adapter to keep the sight low, it fits into the sights mount, and stays there.
https://leapers.com/prod_detail.php?mitem=Mounting%20Systems&itemno=MNT-DT2PW01


It's very quiet, and very accurate.
It's a crosman barrel, but it's been polished and crowned.

[kj]

why not just skip buying the gun and buy parts to assemble. in the end alot of the stock parts will just end up in the parts bin, un-used. i figured that out after my first co2 build and i had kept next to nothing. there are so many ways to go with this platform.

whatever you decide have fun
peace
kj

ps..don cothran has nice stainlesss power adjusters, tubes , trigger blades etc

[Blue]

why not just skip buying the gun and buy parts to assemble. in the end alot of the stock parts will just end up in the parts bin, un-used. i figured that out after my first co2 build and i had kept next to nothing. there are so many ways to go with this platform.

Well how else are you supposed to end up with a box of LEGOS, I mean spare parts, to inspire the next build? 

Blue

[45Bravo]

If you keep buying stock 2240's and building from there, you end up wit a lot of duplicate parts in the spares bin.
Several plastic breeches,bolt probes that are too short, standard barrels, front and rear sights.

This photo shows the importance of an extended bolt probe.

The factory probe seats the skirt right over the transfer port.

[Hoosier Daddy]

I really thought about buying a 1701 trigger group and building it from scratch... Or taking my on advise I have given here and picking up a 2300KT / 2400KT from the Crosman custom shop built the way I want it and be way ahead from the Get-go.
 But I chose this route because of Amazon gift cards I got for Christmas so essentially I can do a lot for "Free".
Also, I can shoot it now and see how my mods effect the performance. Left over parts is all part of the game to me. Blue is right, those left over parts are what got me thinking about this build. 

Don Cothran has some nice SS stuff for good prices. THANKS!

I do like how sleek that Challenger power adjuster looks, I wish Crosman listed prices in their online parts lists.
You're right Ian, the extended probe is a necessity. I already have one saved in 3 different shopping carts for when I get a steel Breech.
That Picatinny adapter is SLICK!

[kj]

i understand spending up the amazon cards.lol i found from the original 2240 i never used the left over parts, just gave them away. the idea of seeing what each mod does ia valid though. here is the best pick i had of cothrans power adjuster. he has also made me parts in brass and aluminum.



peace
kj

[Blue]

I keep trying to ignore the spare parts when they whisper about what they could be, I really do!!!

This year I had enough leftovers from builds/upgrades to split a previous project into 2 "new" guns.  I needed to buy a few parts I didn't have for the "upgrade" but then had enough "leftovers" for the new build.

After I got the parts, I realized I mistakenly ordered two different steel breeches.  This actually saved me some time as the one I ordered by mistake was the one I needed so the one I THOUGHT was right now awaits its future in with the other parts.

Now I'm back in the same boat, a bin with enough parts to almost be something!  I can hear them talking about it even now!

Blue

[45Bravo]

Like all crosman parts, the adjuster is priced low, much lower than others, because they make them by the tens of thousands..

[Hoosier Daddy]

Yesterday I blew the Christmas Amazon gift cards and bought a 2240. Coming from seller PA... $3 less than the Amazon Prime free shipping one that comes up without digging.
 Today at lunch I called Crosman with my wish list of parts for price and availability... while it was a buzz kill on the old 392P part numbers being obsolete, the parts for this build was OUT-FRIGGIN-STANDING!
You can get the 177 steel breech kit for < $35 and that Challenger power adjuster for $14... plus all the rest came to $56...
Need to add more and call in the order!