Seneca Dragon Fly 22

Right now I am, but I can't see them, I have to have a scope,
so I am designing a 4" long base that will fit the front sight dovetails
and also fit the front action dovetails at the same time,
then have another 3" base of the same height to fit the rear section of the action.
Then you can extend the scope rings further towards the front to fit more scopes. That is one problem with this short of action, IMHO. YMMV
 
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Hi Everyone;

I read the "Godfather's" 16 posts about the Seneca Dragon Fly over at PA a couple of days ago and decided to see if it was all he claimed it to be. You can find the last post in that thread here: Tom Gaylord's Review of The Seneca Dragon Fly Just keep that one open in your browser and peruse as all links to other posts in the thread are only in that last post. It is well worth your time if you have not read it and you are at all interested in the rifle.

His work there was spot on as far as I have been able to determine. My gun came in this afternoon and (Having read Tom's work) decided to test the velocity at various stroke counts and graph that before actually doing anything else with the rifle. To that end I put some 320 or so strokes into the gun shooting Meister Kugeln 14 grain WC pellets. I chronographed velocities at 1,3,5,7,9,10,11,13,and 15 pumps. I computed Standard Deviations for muzzle velocity at each data point. I extrapolated averages for 2,4,6,8,12 and 14 pumps. I then graphed the average velocities in this chart.
View attachment 355494

Rather than repeat what Mr. Gaylord said I'll point you to his reviews to read as he addressed all points well. I am going to use this thread to document my adventures with the rifle. I must say I am highly impressed with the rifle, particularly at it's price point. Standard deviations for the velocities were exceptional and averaged out to 6 fps for all data points. I believe that will improve when the rifle is "shot in" which Tom addresses in his evaluations.

I am looking forward to mounting an optic and wringing this rifle out on the bench and in the field.

More to follow.

Mike
It really looks like power peaks in the 10-11 pump range. The energy spent with 4 extra pumps isn't
worth the miniscule power improvement.
 
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It really looks like power peaks in the 10-11 pump range. The energy spent with 4 extra pumps isn't
worth the miniscule power improvement.
I pellgun oiled her n ooooo buttery smooth pumps compared to 3in1 oil🥴
Gunna take her out again tomorrow n field test the pellgun oil. I'm sure it's better just from the few test/function cycles i ran it through; I could feel it improving.
I'll continue to do 15 pumps just for consistency sake of my tests(I'll be that guy😅)
Someone gotta do it🤪🤙
 
I think we are going to find out that 12 is max and15 will cool down to 12 over night.
Say what?😅🤷‍♂️
From the chart: 10 pumps is about 650?...15 about 725?
I'd rather have the higher-end 🥴I got a pumper... to pump...🫠
unless testing range/velocity; I (try to) always pump my pumpers to the max manufacturer recommendation.🤪🤙
This slinger will most likely get used for walk n stalk in not so brushy areas lol
 
There is a lot more Horse power under this hood,
if you care to carefully tune for it.

Here is some of the latest test.

Test L1 L2 L3 L4
1= 272 - 252-232-295
2= 351 - 377-354-433
3= 436 - 426-429-439
4= 482 - 465-459-457
5= 511 - 495-482-495
6= 541 - 531-501-511
7= 577 - 567-565-544
8= 593 - 583-705-611
9= 639 - 597-761-757
10= 662- 613-823-800
11= 688- 626-836-849
12= 754- 643-866*-853
13= ------651-900*-870*
14= ------661-------915*
15= ------672-------948*
* = air retained in valve after shot

(L1 test)
Used a valve with Peek air inlet seal and Peek poppet, .145" air inlet hole,
this air check seal had a .135" Dia x .370" long nose that fit into the inlet hole,
this nose was flush at the face of the valve. TP hole =.145".

OEM valve spring and Valve stem length .180" from rear of valve,
Adjusted the pump head to just clear the valve contact, Alum Hammer,
8/9# Flat wire hammer spring, airways opened up to .145" Dia.
14gr Crosman ammo.

(L2 test)
Used a valve with Peek air inlet seal and Peek poppet, .156" air inlet hole,
this air check seal had a .145" Dia x .370" long nose that fit into the inlet hole,
this nose was flush at the face of the valve. TP hole =.156"

OEM valve spring and Valve stem length .180" from rear of valve,
Same test format as above tests, Alum Hammer, Flat wire hammer spring,
airways opened up to .156" Dia. 14gr Crosman ammo.

(L3 test)
Used a valve with Peek air inlet seal and Peek poppet, .145" air inlet hole,
this air check seal had a .135" Dia x .370" long nose that fit into the inlet hole,
this nose was flush at the face of the valve. TP hole =.145"

OEM valve spring and Valve stem length .375" from rear of valve,
Same test format as above tests, Alum Hammer, Flat wire hammer spring,
airways opened up to .145" Dia. 14gr Crosman ammo.
*Air left after shot.

(L4 test)
Used a valve with Peek air inlet seal and Peek poppet, .156" air inlet hole,
this air check seal had a .145" Dia x .370" long nose that fit into the inlet hole,
this nose was flush at the face of the valve. TP hole =.156"

OEM valve spring and Valve stem length .375" from rear of valve,
Same test format as above tests, Alum Hammer, Flat wire hammer spring,
airways opened up to .156" Dia. 14gr Crosman ammo.
*Air left after shot.