Seneca Domed 28.5gr

[Ordinary Average Guy]

Created: 02-05-2022 12:56:32 PM
Description: Cayden .22 - Seneca Domed 28.5gr
Ballistic Coefficient: 0.140
Bullet Weight (gr): 28.500
#     FPS        FT-LBS     PF
24    767        37.23      21.86   
23    765        37.04      21.80   
22    767        37.23      21.86   
21    771        37.62      21.97   
20    771        37.62      21.97   
19    772        37.72      22.00   
18    769        37.43      21.92   
17    767        37.23      21.86   
16    769        37.43      21.92   
15    764        36.94      21.77   
14    770        37.53      21.94   
13    773        37.82      22.03   
12    770        37.53      21.94   
11    768        37.33      21.89   
10    768        37.33      21.89   
9     760        36.56      21.66   
8     767        37.23      21.86   
7     769        37.43      21.92   
6     768        37.33      21.89   
5     774        37.92      22.06   
4     770        37.53      21.94   
3     768        37.33      21.89   
2     774        37.92      22.06   
1     773        37.82      22.03   
Average: 768.92
StdDev: 3.26
Min: 760
Max: 774
Spread: 14
True MV: 771.41




Created: 02-05-2022 01:04:18 PM
Description: Armada .22 - Seneca Domed 28.5gr
Distance to Chrono (FT): 4.00
Ballistic Coefficient: 0.140
Bullet Weight (gr): 28.500
#     FPS        FT-LBS     PF
20    769        37.43      21.92   
19    760        36.56      21.66   
18    776        38.11      22.12   
17    778        38.31      22.17   
16    779        38.41      22.20   
15    775        38.02      22.09   
14    783        38.80      22.32   
13    783        38.80      22.32   
12    774        37.92      22.06   
11    786        39.10      22.40   
10    775        38.02      22.09   
9     788        39.30      22.46   
8     780        38.51      22.23   
7     787        39.20      22.43   
6     776        38.11      22.12   
5     783        38.80      22.32   
4     782        38.71      22.29   
3     783        38.80      22.32   
2     786        39.10      22.40   
1     776        38.11      22.12   
Average: 778.95
StdDev: 6.74
Min: 760
Max: 788
Spread: 28
True MV: 781.48




Created: 02-05-2022 01:13:59 PM
Description: Flash .22 - Seneca Domed 28.5gr
Distance to Chrono (FT): 4.00
Ballistic Coefficient: 0.140
Bullet Weight (gr): 28.500
#     FPS        FT-LBS     PF
24    744        35.04      21.20   
23    745        35.13      21.23   
22    746        35.22      21.26   
21    752        35.79      21.43   
20    754        35.98      21.49   
19    750        35.60      21.38   
18    759        36.46      21.63   
17    757        36.27      21.57   
16    754        35.98      21.49   
15    754        35.98      21.49   
14    761        36.65      21.69   
13    764        36.94      21.77   
12    764        36.94      21.77   
11    768        37.33      21.89   
10    766        37.14      21.83   
9     767        37.23      21.86   
8     768        37.33      21.89   
7     765        37.04      21.80   
6     765        37.04      21.80   
5     761        36.65      21.69   
4     750        35.60      21.38   
3     758        36.37      21.60   
2     771        37.62      21.97   
1     759        36.46      21.63   
Average: 758.42
StdDev: 7.86
Min: 744
Max: 771
Spread: 27
True MV: 760.88

[Habanero69er]

I shoot Eun Jin 28g pellets out of my Rainstorm-II and my 342s. Both shoot the quite well. Especially the Rainstorm. Those Korean rifles really shoot the Korean pellets well. With the 342s, slow and heavy really puts a thump on squirrels.

[Ordinary Average Guy]

These are the biggest pellets I've tried to date, I like them, but they're very inconsistent, the good news is you get a feel for them when chambering, the real stinkers are such you know the shots gonna wander, and you know when it's going to hit where you're aiming. If I had a way to size them, I know I could squeeze the groups.

[maraudinglizard]

These are the biggest pellets I've tried to date, I like them, but they're very inconsistent, the good news is you get a feel for them when chambering, the real stinkers are such you know the shots gonna wander, and you know when it's going to hit where you're aiming. If I had a way to size them, I know I could squeeze the groups.

I have these sizers and they work well for ironing out problem pellets.

https://www.airrifletuning.com/product-category/tbt-pellet-sizers/

[Habanero69er]

Troy, what are you shootings these pellets with?

[Ordinary Average Guy]

Cayden, Armada and a Flash QE, I noted each rifle in the chrono charts and the target photos. Just to note these are the results after quite a bit of tuning to get the best 2 mag string, with all three rifles being pretty much maxed out as far as any possible adjustments.

[Habanero69er]

Sorry, I missed that.

[K.O.]

where did you come up with .140 for the B.C. that has to be way way high..

 Basically that is about the B.C. of a 40g .22 round nose  standard vel .22lr slug... that has a much better form factor and higher s.d. to begin with (.12 ish)...

the s.d. of a 28g .22 slug is about .84 ish...

out of my rifles, the B.C. of the 30g BBT is right around .08 and it is not dragging a parachute tail like the Seneca...

They JSB 25g Monsters only have a B.C. of about .04 so I figure the Seneca Domed B.C. is just about there...

[Eskimo_Airgunner]

where did you come up with .140 for the B.C. that has to be way way high..

 Basically that is about the B.C. of a 40g .22 round nose  standard vel .22lr slug... that has a much better form factor and higher s.d. to begin with (.12 ish)...

the s.d. of a 28g .22 slug is about .84 ish...

out of my rifles, the B.C. of the 30g BBT is right around .08 and it is not dragging a parachute tail like the Seneca...

They JSB 25g Monsters only have a B.C. of about .04 so I figure the Seneca Domed B.C. is just about there...

I was thinking the BC should be like .023 or something in that range.

[Ordinary Average Guy]

where did you come up with .140 for the B.C. that has to be way way high..

 Basically that is about the B.C. of a 40g .22 round nose  standard vel .22lr slug... that has a much better form factor and higher s.d. to begin with (.12 ish)...

the s.d. of a 28g .22 slug is about .84 ish...

out of my rifles, the B.C. of the 30g BBT is right around .08 and it is not dragging a parachute tail like the Seneca...

They JSB 25g Monsters only have a B.C. of about .04 so I figure the Seneca Domed B.C. is just about there...

I used an online calculator i found, on the other hand it really doesn't affect the chrono calculations at 4'. With the weather starting to warm up, I hope to get to the range and get some chrono readings at 25 and 50 yards.

[Ordinary Average Guy]

where did you come up with .140 for the B.C. that has to be way way high..

 Basically that is about the B.C. of a 40g .22 round nose  standard vel .22lr slug... that has a much better form factor and higher s.d. to begin with (.12 ish)...

the s.d. of a 28g .22 slug is about .84 ish...

out of my rifles, the B.C. of the 30g BBT is right around .08 and it is not dragging a parachute tail like the Seneca...

They JSB 25g Monsters only have a B.C. of about .04 so I figure the Seneca Domed B.C. is just about there...

I was thinking the BC should be like .023 or something in that range.

Gotta be higher than that, the Barracuda 21.14 is .039, the extra weight has to bump it up I would think.

[K.O.]

of course at different velocity out of differing rifles etc.  will have some difference in B.C. 

but did find one instance of a measured B.C.

Pellet Information:
Manufacture:  Eun Jin
Pellet make:  Eun Jin
Manufacturer Specified Weight:  28.5 [grains]
Actual weight:  28.8 [grains]
Weight deviation:  +/- 0.2 [grains]
Sectional Density:  0.082 [pounds(inch2)-1]
Pellet Length:  0.389 [inches]
Length deviation:  +/- 0.002 [inches]

Airgun Information:
Airgun/model:  Airforce Condor
Caliber:  .22 caliber
Power Source:  high pressure air
Pressure:  2800 [pounds(inch2)-1]
Power Level Number:  6

Test Day Information:
Date of Test:  July 29th 2010
Place of Test:  Shamokin, Pennsylvania (outdoors)
Temperature:  83 degrees fahrenheit
Barometric Pressure:  29.89 inches of mercury
Altitude:  850 [feet]
Humidity:  63 %

Muzzle velocity: 964.4
50.0  velocity:  841.6

Ballistic Coefficient:  0.053 G1 


from ,   https://www.airgunnation.com/topic/ballistics-coefficients-of-random-pellets-022-cal/