DONE..I think...

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DONE..I think...

Postby Family Man 811 » Wed Mar 05, 2014 8:33 pm

Here is the set up...
H&N Barracudas 31.02gr shot off a 3250 psi fill (Hill pump)
Hammer Spring- 6
Hammer Throw- 0
Velocity Screw- 4.5
Stock Transfer port
Hill valve w/.157 Exhaust port
.157 Breech port
A2A High flow gauge block
Citrus Depinger
Gaska air reservoir extension
Air stripper mod
Citrus LDC
H&N Barracudas 31.02gr shot off a 3250 PSI fill (Hill pump)
1. 907.2
2. 896.6
3. 904.4
4. 903.2 3200 PSI
5. 907.1
6. 901.0
7. 908.3
8. 908.8 3050 PSI
9. 904.3
10. 903.4
11. 898.1
12. 897.2 2850 PSI
13. 889.4
14. 890.6
15. 886.4
16. 881.3 2600 PSI
END OF MY 2 MAG GOAL
17. 876.0
18. 868.9
19. 867.4
20. 864.0 2450 PSI

14387.3 FPS over 16 shots
Average FPS- 899.2
Average FPE- 55.6
Peak FPS- 908.8
Peak FPE- 56.9
Low FPS- 881.3
Low FPE- 53.4
Extreme Spread- 2.9% or 27.2 FPS
1%= 899.7FPS
2%= 890.6FPS
3%= 881.5FPS
4%= 872.4FPS

Hawke Chairgun Optimum Zero Range
Near PBR= 17 YDS
Near Zero Range= 19 YDS
Zenith= 27 YDS
Far Zero Range= 34 YDS
Far PBR=38 YDS



So I have achieved what I set out for more or less ..main goal was 16 within less than 3% ES and as tight as possible. Secondly wanted to maintain 925-950 fps...fail but with my extreme spread Ill settle for a 900 fps average, that is still averaging 55.6 fpe which is plenty of snort for the critter I plan to pop. Shoot even at 100 yd I'm carrying 30fpe so that added weight helps out especially since Cudas group so damn well in my Mrod. I plan to do an indoor 10-15 YD zero and grouping test before heading out hopefully tomorrow afternoon for a 34yd lockdown and afternoon-evening hunt. If all goes well I will start the 10-15 yd zeroing and make a video of it tonight. If the cam hold up well then it will make the voyage tomorrow afternoon!!!
Here she sits ready to go..
ImageImage
.25 Mrod [email protected] FPE/1.8%(16 fps)ES
.22"D-rod" custom-12 [email protected] FPE/3.8%(40.1 fps) ES
2240 Carbine-15shots@8FPE(22 fps)ES
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Family Man 811
 
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Re: DONE..I think...

Postby Motorhead » Wed Mar 05, 2014 11:57 pm

Shooting damn hard !! ... decent enough string :D
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Re: DONE..I think...

Postby Family Man 811 » Thu Mar 06, 2014 5:20 am

Just a fancier way to look at it with efficiency calculated too.
Image
.25 Mrod [email protected] FPE/1.8%(16 fps)ES
.22"D-rod" custom-12 [email protected] FPE/3.8%(40.1 fps) ES
2240 Carbine-15shots@8FPE(22 fps)ES
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Location: Western Wisconsin

Re: DONE..I think...

Postby Wasatch » Thu Mar 06, 2014 11:41 am

That's a hot looking gun Family Man! Guess you don't need my extension anymore. Sorry I missed your PM.
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Re: DONE..I think...

Postby iride » Thu Mar 06, 2014 9:57 pm

Way cool looking gun there, Looks pretty mean, I bet it handles very good...
Mike
Cricket 25
Cricket .22
Marauder 25
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Re: DONE..I think...

Postby FuzzyGrub » Fri Mar 07, 2014 4:40 am

I don't think we are ever done, just pause at a certain place for a little while. Nice work.
John


Prods: 2201P .22 Pistol, M4 .177/.22 Carbine, PMrod .177/.22 Rifle, MProd .22
Mrods: .25 MDRL Bullpup, Srod .25 Syn Stock, Gen II Woody Reg'ed 177
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Re: DONE..I think...

Postby JohnnyREB » Fri Mar 07, 2014 7:45 am

I am in such awe of the members in this forum that can tune, fabricate and create maraudenstein's. I guess I need to get off the bench and start taking baby steps in tuning. :D
1. I have my .25 and Prod
2. Must, Must, Must get a chrono
3. Read yalls posts and try, retry, rinse and repeat.
Here I go down the rabbit hole...wish me luck or invite me to the tea (Kool-Aid) party.
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Re: DONE..I think...

Postby Family Man 811 » Fri Mar 07, 2014 12:52 pm

Well we never really are DONE are we??? After talking to Bullfrog and RDsail I decided to ensure my velocity screw was fully open instead of just 4.5 turns out. I opened up the gun and watched until it was perfectly flush then lock tightenedd it into place and shot 3 more strings that were all so Identical and so tight I just couldn't believe it. On the down side if one can even call it that, i did lose about 2 fpe but I sure don't mind after seeing my extreme spread and my efficiency! Went back to my old scope mount as i feel it was my culprit in my accuracy woes last night .. if not I fear I may have ventured into Bullfrogs realm of high fill pressure accuracy issues. we will see I guess, anyway here is the revised tune with the Valve screw flush open.
Image
.25 Mrod [email protected] FPE/1.8%(16 fps)ES
.22"D-rod" custom-12 [email protected] FPE/3.8%(40.1 fps) ES
2240 Carbine-15shots@8FPE(22 fps)ES
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Family Man 811
 
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Joined: Tue Dec 25, 2012 10:37 pm
Location: Western Wisconsin


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