Converting Excalibre to CO2 cartridge

The model which started it all. Also known as Webley FX2000 and RWS Exalibre. FX Tarantula and FX Timber Wolf seem to be similar rifles, as is the FX Rapier.

Converting Excalibre to CO2 cartridge

Postby Airjason on Wed Aug 09, 2017 3:24 am

My RWS Excalibre suffered damage in the air tube from not turning that air adjustment screw on the side of the valve back in before taking the gun apart. The valve got stuck and had to be hammered out, resulting in a deep scratch all the way out the back end. The gun would not take any o-rings to seal the leak. A new tube would cost about $300 that I did not want to spend on such an old rifle. Then a thought occurred to convert the rifle to CO2 using a Crosman 2240 pistol body and valve assembly. Found a cheap used 2240 and after a couple of days work, got the rifle completed. The striker spring needed to be cut a couple of coils, and new stock mounting screws had to be drilled and tapped. A cutout on the air tube had to be done to load CO2 cartridges, and this was done on the milling machine. The rifle is fully functional now as a CO2 gun. Velocity for the .177 caliber is about 550 feet per second, normal for a CO2 rifle. It gets about 40 shots per CO2 cartridge. Edit 3/17/2018: I tried adjusting the hammer spring to get higher velocities, but it went lower instead. Looks like 550ft/sec is about all I can get on this conversion. Good news is I am now getting 80 shots per CO2 cartridge.
https://www.youtube.com/edit?o=U&video_id=rzVIO9xwyes
Last edited by Airjason on Sun Mar 18, 2018 4:29 am, edited 1 time in total.
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Re: Converting Excalibre to CO2 cartridge

Postby cyclone sniper on Fri Aug 11, 2017 7:57 pm

no videos on that link :cry:
FX cyclone .22 FAC,
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Re: Converting Excalibre to CO2 cartridge

Postby Airjason on Sat Aug 12, 2017 12:01 am

Cyclone sniper, I am puzzled why you cannot view the Youtube video. In case folks in other countries are having the same problem, I'll put some photos of my work. You will have to use your imagination as to how it goes together.
DSCN0066.JPG
DSCN0066.JPG (182.78 KiB) Viewed 1703 times

DSCN0067.JPG
DSCN0067.JPG (166.26 KiB) Viewed 1703 times
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