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FPE from CR600W

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Pauly5 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Pauly5 Quote  Post ReplyReply Direct Link To This Post Topic: FPE from CR600W
    Posted: 01 Sep 2024 at 10:21pm
You can buy heated jackets that use a battery, and quite possibly heated socks too. Only hassle being that you would need a battery.
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Billbobnz View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Billbobnz Quote  Post ReplyReply Direct Link To This Post Posted: 01 Sep 2024 at 9:59pm
I should run some JSB hades or exacts through it, it needs to come out to start the annual starling slaying haha
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Billbobnz Quote  Post ReplyReply Direct Link To This Post Posted: 01 Sep 2024 at 9:57pm
Looking back on that early thread where I modified it, I was getting up to 585fps with sligtly lighter pellets. I've got a new phone and lost all my chair gun data so will have to enter it all in for get the FPE
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Billbobnz Quote  Post ReplyReply Direct Link To This Post Posted: 01 Sep 2024 at 9:54pm
If you do go bulk filled? Make a dummy 12grm cartridge out of aluminum with a 4mm hole drilled in from the end to a 1/8bsp hole tapped in the side, and I run 1/8 bsp fitting to std paintball fittings to the bottle. I can do some close upstairs and a disassemble of it all if you want

Edited by Billbobnz - 01 Sep 2024 at 9:54pm
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Billbobnz View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Billbobnz Quote  Post ReplyReply Direct Link To This Post Posted: 01 Sep 2024 at 9:50pm
Yes a 9oz paintball cylinder. You should be able to buy them from anyone unless things have changed! Gun city sell them filled or unfilled and a local shop in Ashburton had them a while back
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Post Options Post Options   Thanks (0) Thanks(0)   Quote kruzaroad Quote  Post ReplyReply Direct Link To This Post Posted: 01 Sep 2024 at 9:47pm
He put the fps and pellet type and weight on first page. You can get the fpe at muzzle off that.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote GOODold308 Quote  Post ReplyReply Direct Link To This Post Posted: 01 Sep 2024 at 9:44pm
Originally posted by Billbobnz Billbobnz wrote:

There are warnings on freshly filled pain ball bottles to keep out of direct sunlight as they have been known to bust their over pressure valve


Are you using a paintball cylinder? I am probably just going to the 88g cylinders so if I need gas I can just go pick one up and I was also reading to get a paintball gas cylinder you need to be a member or an airsoft or paintball club before anyone will sell one.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote GOODold308 Quote  Post ReplyReply Direct Link To This Post Posted: 01 Sep 2024 at 9:41pm
Spot on. What tank are you using? Also what kind of FPE are you getting? Are you shooting light or heavy pellets?

I have roughly worked out I need a plenum of around 30cc ish if people are only getting around 565fps.

I have one shot at doing the plenum as I will be parting the pressure tube and putting in a regulator so the more feedback I can get on FPE the better the chance of having the correct size plenum, I have read people get a FPS boost from increasing their plenum size so I will go a bit bigger then needed to allow for any increase in FPS from it.

Having the reg should hopefully help with a consistent pressure in the plenum and I'm pretty sure I have found a simple way to maintain a consistent temp of the cylinder so the pressure out put is consistent.
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Post Options Post Options   Thanks (1) Thanks(1)   Quote Billbobnz Quote  Post ReplyReply Direct Link To This Post Posted: 01 Sep 2024 at 9:33pm
There are warnings on freshly filled pain ball bottles to keep out of direct sunlight as they have been known to bust their over pressure valve
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Billbobnz Quote  Post ReplyReply Direct Link To This Post Posted: 01 Sep 2024 at 9:31pm
Average running pressure on c02 is around 850psi but then due to being sensitive to temperature can go up or down from there.

Worst thing for the little cartridges is that also as you shoot there is a little power curve and rapid firing makes it cool down and drop fps.

I've modified both my cr600 and a crosman 2250 to bulk filled and each shot is so much more consistent + you get about approx 500+ shots from a tank and it cost me under $5 to fill at the local gas supplier.

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