2250 Target Style Pistol Build

[Hollowpoint]

If you have read any of my posts you might have seen me rambling on about a pistol ive been building for longer than I can remember I thought I would post it here in parts for anyone interested to see.

The idea of this pistol was to build a target style pistol using a crosman 2250 as a base, and add as many of my own ideas as possible to make it something differant, and as a first proper project on my mill.

My first steps where designing the thing using sketchup (don't have proper software )

After playing around this is what I came up with:
http://i42.tinypic.com/5yc8z.png
http://i42.tinypic.com/wsp5k9.png

As you can see it has a completely differant grip/frame, metal breech and some other bits. If you look carefully you might be able to guess which pistols I got my inspiration from.

The first part I made was the breach. I found some plans on a russian website which I moddified slightly so my breach would have a small rise. Because this was for a target pistol I also decided to make it left handed so that I wouldn't have to take my hand of the grip to load a pellet.

http://i42.tinypic.com/30w06c8.jpg
http://i42.tinypic.com/mtb5ag.jpg

I will post more later if anyone is interested in seeing it

[Nikkormat]

That breech looks very nicely engineered. I admire anyone who can make stuff like that.

It looks like an interesting project, I'll keep my eye on this thread for more.

Matt

[tayloriand]

Fantastic looking breech!

Please keep the thread updated.

If your workworking skills are as high as your engineering talent I can't wait to see the grips!

Great work.

Cheers
Ian

[Titchgamer]

look forward to seeing the finished product

[PaulR]

I'll be looking to see how it goes as well - good luck!

[Hollowpoint]

Thanks guys, Although the breach might look pretty it has a small, rather annoying and puzzling problem. The bolt cycles fine when not mounted, but when it is attached to the tube the resistance of the hammer spring makes it become difficult to cock. The bolt leaves some scaring inside the breach which makes it get stuck after about 20-30 cycles.

PS ill post some more pics tomorrow

[malakiblunt]

it might be beause ally doesnt make good bearings, could you sleeve it with brass or delrin?

[Retracted_Yeti]

Thanks guys, Although the breach might look pretty it has a small, rather annoying and puzzling problem. The bolt cycles fine when not mounted, but when it is attached to the tube the resistance of the hammer spring makes it become difficult to cock. The bolt leaves some scaring inside the breach which makes it get stuck after about 20-30 cycles.

PS ill post some more pics tomorrow

Might sound like a daft question but did you make the bolt from steel?
I only ask as I had a aluminium breech that used a brass bolt without problem.
I could just be you have the tolerence too tight twixt breech and bolt!!!

Or I could be talking out of my wazzu!!!

Either way, we need more pics and stuff, looks good so far mate.

HTH.

Roy.

[Hollowpoint]

Ive been using a brass RJ machine probe. I made the hole the same size as on my crosman steel breach. Maybe I need to allow more slop in an alloy one?

[beagle2]

I have a crooked barn aluminium one on my 2240 it is second hand but I was surprised at how loose the probe is but it works fine. one thing I will recomend is when I had the gun apart I buffed up all of the moving parts and made them nice and shiny I then put some molly grease on everything and it made it much smoother to use.

[Hollowpoint]

Could you possibly measure the probe and inside diameter of the hole please.

[beagle2]

Without taking it apart ( I cannot find an allen key to fit the screws holding the barrel in ) I have got the one that holds the breech on so I can strip the gun down but not seperate the barrel from the breech but it looks like the probe is 6mm and the hole is 7mm using non digital calipers I hope this helps.

Pat

[Hollowpoint]

Thanks beagle

Update:

Ill start off with a tiny part that needed to be made, The part below is the cocking pin that fits into the hammer and is cocked by the probe. Because my breach has a small rise the pin needed to be longer to connect with the probe.
http://i40.tinypic.com/a5ckyr.jpg
It also had to be hardened by quenching in oil to prevent it wearing out too quickly.

Next up is the grip frame. I spent quite a while trying to get this right on sketchup, it was difficult to get the trigger guard right and still be able to use the existing screw holes in the tube. There is also the matter of squeezing in the trigger parts. Shown below is the frame before polishing out the milling marks. The large hole in the side is to attach the grip which will be done in a similar way to the S200
http://i40.tinypic.com/ot0u4o.png
http://i43.tinypic.com/rwhulh.jpg
http://i40.tinypic.com/xcmxhh.jpg

Below is the frame after I polished the hell out of it. Shame about the damage in the second pic.
http://i40.tinypic.com/2l3kvc.jpg
http://i40.tinypic.com/2584fow.jpg

[beagle2]

It looks like you are doing some good work there. I now that it is not a crosman but there are some similarities with what you are doing and the workings of the feg pistol that I had take a look.

http://www.ponggi.hu/index.php?mod=gpm-d2

[Hollowpoint]

Very interesting, I can definatly see where the similaritys are. I would love to find some build plans for something like that, I dont think it would be too far beyond my capabilitys with a few alterations

PS added a couple more pics to my last post.