20160212_112028
Eun Jin 32.4gr pointed. BC 0.031

I ordered these pellets because I had read the heavy Eun Jin pellets shot well in Airforce rifles. Matter of fact, there are only a few rifles (six I think) that are capable of using this pellet. The pellets fit snugly in the chamber and have a consistent fit. As you can tell in the photo, these pellets are long- about half an inch. I was concerned that the extra length may cause accuracy issues. One neat thing about the length is it makes them easy to load. They stick out of the pellet holder where you don’t have to fight to get them out and they have enough surface area to grab a hold of and reload in a hurry. As this was MUCH heavier than anything I’ve tried, I started by shooting it over the chronograph to find a proper range on the PowerWheel. The rifle was filled to 3000psi and started from PW 10 and went down from there. PW 10 and PW 9 did not record (operator error). PW 10 was 907fps. I don’t remember what 9 was. Shots were 1- PW8, 2-PW7, 3-PW6, 4-PW5, 5-PW4. Here are the result:

Created: 02-12-2016 09:59:59 AM
Description: EJ 32.4 3000psi 8-4
Notes 1: 10&9 didn’t record. 10-907
Notes 2: Used a lot of air
Shots
#     FPS        FT-LBS     PF
5     849        51.87      27.51
4     872        54.71      28.25
3     867        54.09      28.09
2     875        55.09      28.35
1     885        56.36      28.67
As you can see, PW8 through PW5 give about the same results. I just have to find the setting that offers the most accuracy.

25 yard accuracy

The rifle was filled to 3000psi and shot at 25 yards for 3 shot groups from PW8 down to PW6. I stopped at 6.

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PW8 was good, but PW6 edged it out by just a bit. Generally, if I can find a low pressure setting, I’ll use that so I can refill the air faster with the pump.

Chronograph

Created: 02-12-2016 11:07:12 AM
Description: EJ 32.4 PW6 2750psi
Notes 1: Ending pressure 2000psi
Notes 2:
Distance to Chrono (FT): 3.00
Ballistic Coefficient: 0.031
Bullet Weight (gr): 32.400
Temp: 53 °F
BP: 30.23 inHG
Shots
#     FPS        FT-LBS     PF
16    834        50.05      27.02
15    837        50.41      27.12
14    838        50.53      27.15
13    843        51.13      27.31
12    844        51.26      27.35
11    849        51.87      27.51
10    857        52.85      27.77
9     858        52.97      27.80
8     858        52.97      27.80
7     856        52.72      27.73
6     869        54.34      28.16
5     852        52.23      27.60
4     866        53.96      28.06
3     863        53.59      27.96
2     858        52.97      27.80
1     860        53.22      27.86
Average: 852.62
StdDev: 10.68
Min: 834
Max: 869
Spread: 35
True MV: 862.04
Shots/sec: 0.07
Group Size (IN): 0.00

Filling the rifle to 2750 was to low of a pressure for a full 16 shots. You can see that shots 1-10 are incredibly tight. After that, speed dropped off and a ton of air was used.

50 Yard Test

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I was blown away by this pellet at 50 yards. I have never printed a 3 shot, 50 yard group that was so small. The first group was good, but had one average ruining shot.

100 Yard Test

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The wind had increased from less than 1 mph wind at by 50 yard test to 1-5 strong gusts at full value left to right. Chairgun indicated I would need a 5mil holdover to hit at 100 yards. To my surprise, I only needed a 2.5mil holdover. This makes it very forgiving when it comes to ranging errors at long range. My best group was 1.86″ with an overall average of 2.24″. 2 of the shots in the photo were within 0.5″. On a calm day and with more practice (and attempts) I guarantee this is a sub MOA pellet at 100 yards- no small feat.

Terminal Ballistic Test

I was excited to find out what the temporary wound channel would look like. Typically, a heavy, pointed pellet will put a long narrow wound channel. But this pellet shoots at 53pfe! That’s the energy levels of a .25 caliber. I wondered if that alone would change things…

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Like everything else I’ve tested, the entry hole was 0.5″. But the exit hole was 3/8″, almost 1/8 wider than any other thus far. The widest portion of the wound channel was 5/8 and that went for the first 1.5″. After that, the channel gradually reduced in size.

Summary

I was blown away by this pellet. It has outshot anything I’ve tested to date. Based on what I’ve seen today, I don’t think I’ll see anything outshoot it anytime soon. That being said, they aren’t very economical. A tin of 125 costs about $8. For 500, that would cost you $32. For a tin of 500 JSB’s you’d pay about half for a pellet that still shoots well. This setup also seems to use a lot of air, not what you want to see when using a hand pump.

Airforce Condor SS .22

Eun Jin Pointed 32.4gr

PW6 at 2750psi (10 shots before refill)

53fpe

 

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