Crosman 2400KT used with HPA

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DaveT1

Member
Dec 2, 2019
123
46
California, United States
I have CCS 2400KT that is an ongoing project gun. Last year I added a bulk fill adapter and have been using it with a 20 oz. CO2 bottle.. The setup works well except for the inherent pressure changes due to temperature. Recently I've noticed that various paint ball suppliers are offering small (48 ci) HPA bottles. They are 3,000 PSI that's been regulated down to 800 psi. Since this is the same pressure range as CO2, I was thinking about switching over to one of these to gain more consistent pressure and the ability to refill the bottle with my PCP compressor. The nearest CO2 source for me is an hour's drive away.

Does anybody see any problems with this conversion? 
 
Well if you got the Baker bulk kit it will allow you to run 2000psi in the tube so long as you drill through the tube and add three grade eight 8x32 screws threaded into the valve.

https://www.bakerairguns.com/shop/?category=0&s=2240+valve&post_type=product

If you are handy you can do some of these mods.

https://www.airgunnation.com/topic/crosman-2240xl-2/?referrer=1

If you don't want to drill the tube you can get a pre-drilled Disco tube from Roy at

http://mountainaircustomairguns.com/

Then just use the pre-drilled Disco valve from Baker for a true PCP gun.

Never ending 2240 mods can cost a bit after a couple of decades.

https://www.airgunnation.com/topic/the-true-cost-of-my-60-crosman-2240/?referrer=1







You may want to know what else is available out there so here are a few links to surf. These will let you get close enough to the money pit so you can toss your cash in as well. ;^)

https://www.airgunsofarizona.com/index.php?p=catalog&mode=search&search_str=crosman+sear

https://www.airgunbuy.com

https://alliancehobby.com/shortytwo.htm

http://www.alchemyairwerks.com/store/c1/Featured_Products.html

https://www.bakerairguns.com/shop/parts/modification-parts/

https://cothranmachine.com/

https://www.crosman.com/contact Call with part number for parts

https://www.gmaccustomparts.com/epages/BT3197.sf/en_GB/?ObjectPath=/Shops/BT3197/Categories/Crosman_2240/%222240/1740%20GMAC_Custom_Parts%22

https://www.jgairguns.biz/crosman-c-78_89/

https://maverickcustomairguns.com/shop/

https://onlinestore.magnumairpower.com/t/custom-upgrade-parts

https://mellonair.myfreesites.net/barrel-bands

http://mountainaircustomairguns.com/

https://www.pcptunes.com/crosman-airgun-mods-and-spares/

https://schaefershooting.com/3ae3ab49-ca/crosman-2240.htm

https://ssl.tko22.com/

https://urgthrash.wixsite.com/squirrelmaster

https://www.scstocksandgrips.com/co2-and-pumper-stocks

Picatinny mount for 22xx tube

https://buck-rail.com/product/crosman-2240-dr-murfee-mount/

https://www.ebay.fr/itm/Crosman-2240-lower-picatinny-rail-mount/313143188751

https://www.amazon.com/Beamshot-Creates-standard-picatinny-barrell/dp/B00AT57CRU/ref=pd_sim_sbs_sg_1
 
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I have 3 2400KT and a 2240 and all have the GMAC powerlet eliminator bulk fill adapter: https://gmaccustomparts.com/catalogsearch/result/?cat=&q=+powerlet+eliminator

I have used them on HPA at 1100 PSI without any issues for 2-3 years.

They are all entirely stock except for a stronger hammer spring which is needed for higher pressures.

Recently I wanted to try a higher PSI and around 1300-1500 PSI they still work as expected but you can hear weird pops sometime.

The velocity difference between 1100 PSI and 1300-1500 PSI is about 20-25 FPS in .22 cal and 30 FPS in .177 cal with 24" barrels.

So 1100-1200 PSI is likely the safe max.

When using HPA I turn the air on whe I start shooting and turn the air off when I stop, so I do not stress the air gun unnecessarily.
 
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