PureSilver Posted September 11, 2014 Report Share Posted September 11, 2014 You can fit a paintball bottle on the charger with an appropriate adapter; therefore, you can certainly fit a propane tank instead (or even just fill the CO2 tank with propane instead). That gun looks like it needs an MED, if it doesn't have one already. That last photo looks like absolutely no fun at all; imagine that on your face... 1 Quote Link to post Share on other sites
blobface Posted September 11, 2014 Report Share Posted September 11, 2014 I'm curious how well .12s will work with this, because I suspect the fps remains more or less the same, so that might take down the "felt" power, but it's why I keep repeating that this gun isn't exactly game safe at close range, especially to the face for people with only shooting glasses. 2 Quote Link to post Share on other sites
NonEx Posted September 11, 2014 Report Share Posted September 11, 2014 (edited) Todays CAM870 pro tips are; When removing and installing the trigger group, keep the hammer cocked. Makes it a lot easier. When working with trigger group out and stock off, to reinstall the trigger group and keep shell latches in place, put in the buttstock backing plate. It keeps the shell latches in the correct position! Also the APS rail/scope mount is off-spec. The side bends of the metal bottoms out agains the top of the reciever before the front hole aligns. Will dremel dat *suitcase* tomorrow and make it fit. Oh and another thing. The plastic on the Hogue TAMER grip is one of those that isn't very easy to work with. The Dremel sanding tool barely makes a scratch and a hand file even less so. Since you need to remove almost half it the material interfacing with the reciever, my tip would be to saw it off or use a Dremel cutting disc. Leave it a bit too high and then finish it off with a hand file for a perfect fit. For the shell latch cut-outs I used a heavy duty Xacto knife and just used it as a chisel pretty much. Cut a little at a time and you'll get a nice clean cut in there. I can put up pics of the mods required later. But basically you just match how the OEM stock looks and it's fine. Edited September 11, 2014 by NonEx Quote Link to post Share on other sites
Reppyboyo Posted September 11, 2014 Report Share Posted September 11, 2014 Cant see the problem with the spread so much.With ridiculously high ROF AEG's firing at 350fps you are still in the same boat. Besides, its what face protection is made for. Quote Link to post Share on other sites
Aod Posted September 12, 2014 Report Share Posted September 12, 2014 I was thinking of how to simulate blued steel instead of the flat matt black, any pointers? Hey buddy. An application of Cerakote "Midnight Blue" (H-238Q) with double hardener (12:1) is the closest "paint" finish to resembling a glossy blue finish. 18:1 is close to satin and 24:1 would be matte Quote Link to post Share on other sites
PanteraTigris Posted September 12, 2014 Report Share Posted September 12, 2014 Also the APS rail/scope mount is off-spec. The side bends of the metal bottoms out agains the top of the reciever before the front hole aligns. Will dremel dat *suitcase* tomorrow and make it fit. With this on the gun, will the shell catcher still fit without problems? Quote Link to post Share on other sites
NonEx Posted September 12, 2014 Report Share Posted September 12, 2014 Hmmm, I haven't even though of that. Let me try it and get back to you. Doubt it will though. Quote Link to post Share on other sites
DEVILHUNTER Posted September 12, 2014 Report Share Posted September 12, 2014 I'm just curious, NonEx can you post a picture of how the shell latches are secured with the butstock plate? In the Tanakas there are no plate, they are secured to the receiver with an internal feature impossible to be machined. Quote Link to post Share on other sites
NonEx Posted September 12, 2014 Report Share Posted September 12, 2014 Yeah sure I can take a pic of that. Also, for anyone wondering, the grub screws at the front holding the magazine tube in place are 2mm metrix allen/hex screw. Quote Link to post Share on other sites
NonEx Posted September 12, 2014 Report Share Posted September 12, 2014 OK so shell catcher is a no go with the rail in place. Here are some pics of the buttstock plate; The gray area is the plate that can be removed. If you have the trigger group out, and remove that plate, the shell latches will pop lose from the internal cutouts in the reciever and bend inwards towards the center of the reciever. Here are some pics of my modded TAMER pistol grip; The cutours on either side at the bottom there are to accomodate the shell latches that are kind of sticking out into the grip/stock interfacing area of the reciever. Quote Link to post Share on other sites
Brigg Posted September 12, 2014 Report Share Posted September 12, 2014 If your planning on using the 870 at close range, just use some damp paper towel instead of a plastic Wad. The spread will be wider and you won't have the heavy Wad hitting anyone. And you don't need to buy wads. The spread using a small wadded up paper towel is more then suitable for close range. Quote Link to post Share on other sites
NonEx Posted September 12, 2014 Report Share Posted September 12, 2014 Just picked up my CO2 adapter. Fits like a glove in the loading tool. Let's just hope the 88g CO2 apsules fit just as good in the other end No sign of my rubber paintball bullets I ordered almost 2½ weeks ago Guess I'll email the eBay seller and see. Quote Link to post Share on other sites
jal3 Posted September 12, 2014 Report Share Posted September 12, 2014 (edited) What size? If it's .68 you should be able to get reballs in most PB shops. Or even ask if a field somewhere wants to give you a bucket of worn out ones. Shame to fire away mint reballs. Edited September 12, 2014 by jal3 Quote Link to post Share on other sites
NonEx Posted September 12, 2014 Report Share Posted September 12, 2014 Yeah that's my backup plan if they don't show Quote Link to post Share on other sites
mvirtue Posted September 13, 2014 Report Share Posted September 13, 2014 HPA tanks work nicely: 2 Quote Link to post Share on other sites
blobface Posted September 13, 2014 Report Share Posted September 13, 2014 Wow hpa works!? Would have thought it needs the liquid co2, guess not! Quote Link to post Share on other sites
NonEx Posted September 13, 2014 Report Share Posted September 13, 2014 I guess the next step is for someone making it work on an 11v LIPO battery or something Quote Link to post Share on other sites
blobface Posted September 13, 2014 Report Share Posted September 13, 2014 Or carbohydrate Quote Link to post Share on other sites
PureSilver Posted September 13, 2014 Report Share Posted September 13, 2014 HPA tanks work nicely: Is that tank actually full of HPA? It seems like a very, very bad idea to put 3,000psi HPA into a shell designed for 800psi CO2. Potential maiming bad. And, like blobface says... Would have thought it needs the liquid co2, guess not! ... Surely the system needs the liquid-to-gas expansion to function effectively? Quote Link to post Share on other sites
jal3 Posted September 13, 2014 Report Share Posted September 13, 2014 The HPA tank has a 3000/4500PSI -> 800PSI regulator on it. So it's filling the catridges with 800PSI vapor gas, vs 800psi* liquid gas. *CO2 liquifies at a higher pressure, but it's comparable. Quote Link to post Share on other sites
PanteraTigris Posted September 13, 2014 Report Share Posted September 13, 2014 Somebody tried that already in Hongkong and said it wont charge the shells. 1 Quote Link to post Share on other sites
mvirtue Posted September 13, 2014 Report Share Posted September 13, 2014 Somebody tried that already in Hongkong and said it wont charge the shells. It's what I have at home...and it's working. Might not be the best for range. But it's doing a number on my workshop door at 50'. Also unless people put the CO2 canister above the shell when filling, they are not getting any liquid CO2, they are just getting the expanded 800psi air. 1 Quote Link to post Share on other sites
PureSilver Posted September 14, 2014 Report Share Posted September 14, 2014 (edited) Well, it might be enough to push the BBs out of the barrel, but it's not going to be anything like as powerful as the CO2 should be. HPA at 800psi is approximately 50:1 volume-for-volume for normal atmospheric pressure; that is, you can store 50x the volume of air at 800psi as you can at STP (14.696psi). Liquid CO2 at 800psi is approximately 450:1 volume-for-volume for normal atmospheric pressure; that is, you can store 450x the volume of CO2 at 800psi as you can at STP. So, provided you fill the shell with liquid CO2, you can store 9 times the volume of gas in each one compared with filling it with HPA at the same pressure. That might make it safer to skirmish - it's not necessarily a bad thing. Edited September 14, 2014 by PureSilver Quote Link to post Share on other sites
mvirtue Posted September 14, 2014 Report Share Posted September 14, 2014 Just tested CO2 feeding the shell from above, CO2 from below, and HPA from below. 5 .3g bbs, X-Coretech 3200, factory shell covers, and wadding CO2 below 200 fps HPA 250 fps CO2 above 270 fps 1 Quote Link to post Share on other sites
NonEx Posted September 14, 2014 Report Share Posted September 14, 2014 So we should really be loading this thing "upside down" is what you're saying ? Quote Link to post Share on other sites
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