.257 Shots fired, shots fired, all TAG units within…
the vicinity of Talonairgun.com please respond!
I already told you I was only shooting @ 30 yards so keep your smart ass comments to yourself, or not 🙂
At first I was puzzled by my air situation. I went to the firehouse and I was told by my buddy that he put 4500 psi in my big tank. When he started filling my Joe B. Guppy tank it started hissing at 4200 psi so we figured that was it due to safety valve (have to look into it to see if Joe puts those in his tanks anyone know? Please speak up). EDIT
Just left my guppy tank connected to my big tank for 20 minutes and it turns out that both gauges are working fine. My big tank only has 3900 psi in it???
Why would the firehouse gauge show that it had 4500 psi in it???? So now both CF tanks have 3900 psi in them. Could the firehouse gauges be old and in need of replacement? Perhaps.
One thing though is that when I fill the condor tank directly from the CF tank …when the CF tank says 3400 psi the condor tank gauge only shows 3000. What do you think Doug? Should I try a different gauge on the condor tank….
I tried to move past this first mystery to the next. I am shooting in my backyard 30 yard range (sighting in the SS scope) when I notice that this thing is very tame to my ears. Hell my 24″ .25 condor was much louder!!! I figure it is either lack of air flow or lack of hammer so I go retrieve the chrony from my shed and wouldn’t you know it I was only pushing the 70 grain Lymans at 800 fps. I didn’t realize (despite Doug’s instructions to set the hammer preload to around 2.1) that the preload was at “0” . Since I have no numbers on my frame I grabbed my .25 to compare the position of the screw to. Sent the first shot over the chrony and I knew by the loud bang (although not obnoxious by any means) that my fps had increased…now showing 1,050 (171fpe).
Getting late in the day, yard work to do, son wants to carve some faces into walking sticks, babies crying, dogs whimpering, sun blazing, time to wind things down for the day so I shot a seven shot group with the lyman’s. I shot four shots, then added some more air for the next three shots. Sent number seven from the off hand position and I must say that this gun is a dream to shoot. I expected it to have a more “violent” hammer kick but it does not! It is very smooth. Cocking is relatively effortless and so smooth. I can’t wait to put in some more trigger time but now I have to figure out this “air” situation so please add your “two cents” below, thanks.
p.s. I really enjoyed sighting in with (the first time ever) the Mil/Mil Swfa. First shot was two mils left and 3.5 mils high. Dial my windage 2 mils right and 3.5 mils down and kabowwwwwwwwwwwwww! Bulls eye! Think I’m gonna give this milliradian thing a shot, but for now I am still doping in yards not meters, lol.
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All Replies
A training facility just might short fill.to make sure they get experience with the low on air alarm.
Im kinda late here Joe but, i would not be suprised if the Firehouse filled your tanks up fast and when it cooled down, you only had 3900-4000 in the tank. Thats common at dive shops for sure. Don’t know about Firehouses. But regardless, if any of them fill a SCBA tank quickly, the actual psi in the tank after it cools will be considerably LESS then when they filled it. Happened to me a lot
Most CF tanks when filled a dive shops have to be filled pretty slow. I used to leave mine at the dive shop over night, and many times, i did not have a full fill. Only one guy there would do it right and it was obvious when it wasn’t him that did it.
Time for a compressor
No they pop and it’s over. Try snugging up the nut. It may not be tight enough.
I hope the firemen are getting a full fill on their breathing tanks ❓
They need all the air they can get while inside a burning building.
I was thinking the same thing but the place I get it filled is the county training facility. I think I need to see if I can get it filled at one of the active stations because now that I think about it…my last few fills emptied out rather quickly and I am doubting that I ever had more than the 3900.
So do the safety burst disks start to weep before they blow? It started hissing when the guppy tank gauge read 4200 psi.
The Guppy tank has a Safety Burst Disk.
I hope the firemen are getting a full fill on their breathing tanks ❓
They need all the air they can get while inside a burning building.
You don’t need to send another gauge. I can live with this one. I always used my tank gauge as my main gauge. Glad I didn’t try to push another 300 into it or rather, I’m glad there was not burst disc on the valve body 😯 🙂 😥
Thanks again bro, this thing is first class all the way. Can’t wait to really try it out!
That is my fill tank gauge, so I never paid too much mind to the rifle gauges as I never had one that was very accurate.
You figure out the PW yet? 1051 fps is more than I got but I never really tried because of your tank size. I was looking for consistency.
Doug,
I didn’t really have time to mess with it today other than what I did. With the power wheel where it was I ran three shots within a 10 fps ES. I can back it off a little, especially when I am trying for the most accuracy. My next session will be better.
One of my tanks reads 200 psi high.
You figure out the PW yet? 1051 fps is more than I got but I never really tried because of your tank size. I was looking for consistency.
Doug,
You don’t need to send another gauge. I can live with this one. I always used my tank gauge as my main gauge. Glad I didn’t try to push another 300 into it or rather, I’m glad there was not burst disc on the valve body 😯 🙂 😥
Thanks again bro, this thing is first class all the way. Can’t wait to really try it out!
Joe,
Be sure to take the rubber tubing off your forearm, and the spike out before going to work. 😆
RC
Ok sorry about that. I thought I switched that gauge out. I guess I didn’t get it far enough away from the rest of the gauges.
That gauge is off right around 300 psi. I never filled your tank after I put it back together so I didn’t notice it. I just put in around 1500 psi to make sure it was all sealed after reassembling it after the black oxide.
So 3000 is 3300 psi. I will send you another gauge with your stem tool. I will check it also with my gauge that is +- .25% and let you know what it is at exactly.
Those gauges are for reference but that one was a little to far off. Some are real close. Some measure more pressure. Some measure less.
They are suppose to be +- 5%
You should use your larger gauge to fill your tank to 3000-3200 psi and then look at your tank and see what it says.
For the PW, use the numbers on the wheel. I always set the PW to 0 when I’m done shooting. So start rolling the wheel until it hits 0 and then go 2 full turns and stop at 2.1-2.2. Then you can adjust it up or down a little to flatten out your curve.
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Yes, Ced that tank was On fire! I lost 400 psi when the Guppy cooled. I suppose I can go back to the dive shop and give it a try. They are so anal. I think they will insist on a “visual inspection” on my Big tank. I mean, come on, a visual on a CF tank that is only three years old! They just want to get an extra 15 bucks out of me. I know they used to max my tank out at around 4200. But that is better than 3900.
Yes, I do need a compressor but that wont be anytime soon. Maybe, two years from now I will be ready. I also need a hand pump. I am going to try to get one soon as they will be vital if the grid ever went down.
Lurker, they sure filled my tank super fast so that might explain it, but perhaps they do short fill….