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PCP Rifle  WTS Air Venturi Avenger 177 with Nightvision scope

177 cal Air Venturi Avenger Bullpup. Comes with 2 aftermarket barrel supports and Donny FL silencer adapter. Additionally it has a buck rail silencer which is an excellent air stripper as well. It also comes with 1 factory mag and 1 AE Swede 20 rd mag. It also comes in a nice gray padded case. It also was a compact cv life bipod.
I’m including a one leaf 3x12 scope which pairs with the nv100 day/night recorder so you can record your hunts day or night. The gun is in great working shape..the only issue is a little scuff mark on the end of the barrel shroud. This gun puts out 31 fpe which means this gun is a cannon in 177 cal. Shoots zan and JSB slugs well. Definitely not a toy but this gun pairs well with shooters of all skill sets.
Value: gun 400..accessories including silencer..150…scope…500…nv100 recorder..300.= $1035.
That’s what I have in it. I want $850.

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Velocity versus Accuracy

Ed, anything to distinguish the guns which shoot the NOE 27 grain hunter well? Velocity? Do you know if their twist rate is slower or faster?

I've calculated the "efficiency" of my three P35s. The 25 and 177 caliber were good in efficiency but the more accurate 22 caliber was less so. I recently had to reset the hammer spring in the 22 because a grub screw fell out of the cocking mechanism into the hammers path so I had to remove the adjuster to extract it and put it back where it goes (with a drop of blue locktite). When I reset the hammer spring I deliberately set the hammer spring a little lighter than would give me maximum velocity for the regulator setting. But that gave me a first shot that was 10-20 fps lower than the rest of the string. So I turned the hammer spring up a little and I think I have that fixed. My P35-25 did the same thing about a year ago. I don't know if this is unique to the regulator in the P35s or "normal". I will need to do a longer string to recalculate efficiency but my guess is I am back where I started. The regulator in the 177 and 22 are set where they came to me. The 25 is turned down a bit because the 20 grain FTTs it likes were going 900 fps or more and I didn't think I wanted that. Accuracy didn't change when I turned the regulator down. But I had to decrease the hammer spring to match the new regulator setting. Long way of saying I set my hammer spring pretty close to maximum velocity in my P35s because if I do not, the first shot velocity is low. I still get good efficiency in two of the 3 and it isn't bad in the third. I had to shorten the hammer spring of the 177 to be able to set the hammer spring low enough to match the regulator. It's probably the same spring used in the 22 and 25.
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Stainless Steel barrel - how to blacken

Along this week I managed to recut the M14x1.25 into 1/2-20.
This is a 6 grove polygonal .22x500 barrel, no choke, the outer OD cut to to rifling ID from 15mm to 14mm, , made in russia.

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I realized that the FX shroud internal air stripper is more important to me. I had that shroud laying around after I replace it with barrel tuner on my Impact MK2.

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So my Leshiy2 looks like this ... today :) , but waiting for my prism sight (in the mail as we speak) and that red dot is going down soon.

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FX  Panthera/Dynamic - Plenum/shroud combinations

I know this is an old thread.
However I wanted to say thanks for the input from those on here.
It helped me in building what I set out to do which is a one off piece in the form of a 700mm King.

I will post up a thread once I get it all done.
Did all the little pieces to do the barrel swap and got out earlier this week and shot 40 gr slugs as 960fps on a stock hammer.
And very quiet at that.

Changing AirArms “t-bar” fill port to a Foster fill port

I switched my S300 and S400 from the OLD Air Arms fitting (pre T-Bar) to the foster fitting. No complaints. Worked well. Used the Best Fittings kit.

If the T-Bar REALLY bothers you (I like it - I think it's safer and more secure and faster w/ gloves, etc.), I wouldn't hesitate. Just do it safely. There's a bleed screw right in on the valve body on the S510 that drains all the air from the cylinder in about 60 seconds. Great feature that makes it easy to do things like this.

If you need help or have questions, send me a PM. I have had S510's apart so many times I could do it blindfolded.
Thanks, the part has left England and I should have it soon.
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