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Author Topic: How do I shoot 'regulated'?  (Read 295 times)

Steelhead

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How do I shoot 'regulated'?
« on: July 24, 2017, 06:28:04 AM »
I'm newer than new to PCP and I'm learning more and more every day. I would like to know how one shoots regulated? I've searched here and couldn't find the answer. I have a Texan .308 with the 74 cu. ft. Air Venturi carbon fiber tank.

Thanks in advance for your help, I appreciate it.

Kevin




Benjamin Prowler .177
Airforce Texan .308


  • Petaluma, CA
Airforce Texan .308
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Air Venturi compressor

Alan

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Re: How do I shoot 'regulated'?
« Reply #1 on: July 24, 2017, 07:01:31 AM »
The Texan has adjustable power, but it isn't regulated to the best of my knowledge.

There are adjustable regulators which attach to a remote air tank, and you could use one of those. But that isn't really a viable workaround. Hang with us, and someone with more knowledge of the Texan will chime in soon.
  • Roswell, New Mexico
Alan

I have an Omega compressor. If you're a fellow Guild member, and you pass through Roswell, NM, I'll fill your portable tank as a courtesy.

rsterne

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Re: How do I shoot 'regulated'?
« Reply #2 on: July 24, 2017, 07:29:58 AM »
The .308 Texan uses a lot of air, so setting it up for an onboard regulator is fairly complicated.... You need a "plenum" (air chamber), between the regulator and the valve, that the valve can draw from during each shot.... If the plenum volume is too small, you get a large pressure drop during the shot, which hurts both power and efficiency.... Doug Noble makes plenums for the Air Force guns, but they are quite large, and extend the tank further back....

The other method is to tether your gun to an external regulator between your 74 CF tank and the gun.... This allows the gun to remain unregulated, but tops up the onboard tank between every shot to keep the velocity constant.... When the gun is properly tuned, it allows you to remove the gun from the tether for a few shots at basically the same power.... This setup is good for target shooting, tuning, and often for varmint hunting, where you are shooting from a bench or semi-fixed location.... but want the flexibility of a few shots "off-tether"....

Bob
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Steelhead

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Re: How do I shoot 'regulated'?
« Reply #3 on: July 24, 2017, 06:23:45 PM »
Thank you Thank you Thank you to you both for your excellent responses. This is all new to me so I take advice with the goal of having more fun, getting better results, and not blowing myself up. I didn't know if it was something simple that I wasn't doing with the equipment I had OR that it the matter of purchasing a cheap and simple part. This is sounding like something a little more expensive and technical for my wallet and abilities right now. I'm just getting used to the gun, filling, and the other logistics/characteristics of the process.  I purchased a chronograph (arrived today) and an assortment of bullet weights/styles from both a couple of different suppliers and my plan is take some good notes, record info, and see how I do.

I bit the bullet (pun intended) and just finished sighting my gun here at my house. I swore I wouldn't do it because deer season (which unfortunately I have to use my center fire 30.06) is right around the corner in a couple of weeks and I didn't want the noise running them off. But its windy as hell outside (trees are roaring) and I figured the sound won't carry too far so I couldn't resist. I got her dialed in to dead on at around 40 yards and that's good enough until later in the week. My brother's dairy farm is about 10 minutes away and there are unlimited places there where I won't be hunting so I can plink away. My buddy is welder and he's making me a couple of gongs so that should be cool.

This is only the second time I've fired the Texan. I'm so happy and have no regrets whatsoever about jumping in the deep end with that gun. I'll probably go in reverse direction of most and buy more small bore guns now! I already have the big tank so I may as well (that's my excuse anyway)  ;D
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int3man

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Re: How do I shoot 'regulated'?
« Reply #4 on: July 24, 2017, 06:39:54 PM »
Well Steelhead if you are pesting around the house most of us started with a .25 Marauder.  It is a great platform and allows for you to learn gunsmithing as you go.  I like them tuned for a 2600 PSI fill and that way I can get some use out of a 3,000 PSI tank.  And if you can cascade 2 (3,000 PSI tanks) together you can really stretch the fills out.  I'm in the central valley if you need a hand.

Michael :- )
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