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 Post subject: Condor Big Bore in 9mm
PostPosted: Thu Apr 18, 2013 11:16 pm 
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Joined: Thu Feb 02, 2006 11:35 pm
Posts: 3099
Location: Alberta Canada
Well I know a few of you have been waiting for some Chrony #s upon the BIG BIRD.

Now for just a recap of mods done. 24# hammer spring, 130gram brass hammer, Custom breech to accommodate the 1/2'' od 9mm bbl liner, center fire bbl liner 1 in 10 twist. 24" in length. Valve is stock AF, the stem was modified to fit the factory valve, port size still being .196 as per factory. Stem set at .082 duration. It was highly polished to improve flow and shot count.

Sunny skies +7C with a 8 to 10 K/hr breeze

Tank fill 2800psi Power wheel set at #2
821.0
818.5
812.1
811.2
807.3
805.4
802.6
797.3
794.4
791.5 Total of 8061.3 Average string 806.1fps 112fpe Tank level remaining 2650psi

Continuing string 2 with 2650 psi in tank
793.9
788.2
787.7
786.6
774.8
776.9
770.6
769.5
769.0
762.0 Total of 7779.7 Average string 778 fps 104fpe Tank level 2350psi remaining

So that being an average of 792fps for 20 shots with a 59 fps spread. Accuracy from this bbl using the JSB .35 cal 77gr pellets was sub to 3/4' at 50 yrds.

Now the Condors power wheel set at 8 The string increased by 55ish fps compare to the above strings. Tank level after 20 shots was that of 2050 psi remaining. So a high of 879.3fps low 811.8fps Ave 846.3fps Not quite the 850fps I was hoping on attaining with 20 shots but darn close. A little more wheel to play with here.

Now with the stem duration opened up to .097, power wheel set at 6 shooting 124gr casted then resized pistol rnds.
Tank filled to 2800psi

898.8
887.5
880.1
873.4
865.6
856.0
856.3
849.6
841.0
838.7 Total 8646.4 fps Ave 864.6 206 fpe Tank pressure remaining 2380psi. Accuracy with these bullets was 1 to 1 1/4" groups at 50yrds.

This is the most energy efficient and accurate set up that can be done with out purchasing or building (pendant upon the owner) a completely modified valve for the AF platform. The gun is more than capable of sending 124gr super sonic down the pipe just accuracy lacks. 3 to 5" groups at 50yrds doesn't cut it for me.
If I would have used my 28" bbl for the test I'm sure there would have been and increase of at least 35 to 45 fps, with the AF valve. But thats for another project. LOL

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PostPosted: Fri Apr 19, 2013 12:50 am 
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Pretty impressive numbers!!

Looks like a good platform for our Hog Hunting Posse.
200FPE CONDOR!!!! Here lil piggy.... I think you have researched
The limits of modifying the factory valve!! Nice!

You know me, I can't help but wonder what can be achieved
With the 28'' barrel and the power wheel maxed out? And maybe
An aftermarket valve? ....impressive to say the least! Also very efficient!!
20 shots on a bigbore!!!???!? Well done KIM!!

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PostPosted: Fri Apr 19, 2013 6:00 am 
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Location: Calgary, Alberta
Loving those numbers Kim!!

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PostPosted: Fri Apr 19, 2013 9:38 am 
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Posts: 6018
Location: P.G. B.C.
That's amazing, Kim. Maintaining and actually increasing the speed with a pellet running 62% greater mass and supersonic capability. Those Air Force guns are truly amazing in themselves and what can be done with and to them.

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PostPosted: Fri Apr 19, 2013 10:22 am 
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Posts: 6845
Location: Rocky Mtn Hse Alberta
Great going there Kim!!!!

Wonder what the results would be of say 10 shots at 2, 10 shots at 4, 10 shots at 8 or some such?

Bet a guy could shoot some number of shots and add power wheel to flatten the curve as the pressure falls and get a pile of real close numbers!!!

Walter....

Pig Busters here we come eh! :)

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PostPosted: Fri Apr 19, 2013 11:26 am 
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Location: Alberta Canada
Thanks guys. As for power wheel adjustments as per shots, that'll have to wait till weather smartens up again, snowing here once more :( . Just love the diversity of this province, LMAO.

But yes, I figure a slight adjustment after the 2nd or 3rd shots within a string would straighten out the power level quite considerably. There would be a reduction in shots by 20% or so, but for a non regulator setup not too shabby.

Besides you only need one rnd at a time to put into a piggy, :twisted: :twisted: ha ha ha LOL.

Daryl said. Those Air Force guns are truly amazing in themselves and what can be done with and to them. And to think it all started from a 1970s design of a Co2 powerd, spear gun, go figure, eh
I've only been playing with this platform since 1999 when I purchased a Talon from a member here. The modular aspect of the gun it what makes it so much fun. From .177 to 9mm from the same valve design makes for quite the multi purpose air arm. IMAO

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PostPosted: Fri Apr 19, 2013 1:48 pm 
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Location: Canada
Whitewolf wrote:
Besides you only need one rnd at a time to put into a piggy, :twisted: :twisted: ha ha ha LOL.


I suspect that if it wouldn't do the job before (.30cal...and I'm darned sure it would have)...it sure as heck WILL do the job now...with authority. 8)

Do wolf cubs like bacon?

Al


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PostPosted: Fri Apr 19, 2013 2:26 pm 
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Location: Alberta Canada
Gippeto wrote:
Whitewolf wrote:
Besides you only need one rnd at a time to put into a piggy, :twisted: :twisted: ha ha ha LOL.


I suspect that if it wouldn't do the job before (.30cal...and I'm darned sure it would have)...it sure as heck WILL do the job now...with authority. 8)

Do wolf cubs like bacon?

Al

Well we know that in 30cal it would do quite well. And as a matter of back the pack does like their bacon and ham and extra moisture in their deer and moose sausage. Ha Ha Lol

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