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Education / Training Air Venturi Seneca Eagle Claw lever action repeater: Part 5

Air Venturi Seneca Eagle Claw lever action repeater: Part 5

Eagle Claw
Eagle Claw lever action repeater.

Part 1
Part 2
Part 3
Part 4

This report covers:

  • Filled to 200 bar
  • The test
  • The numbers
  • String two
  • Discussion 1
  • Discussion 2
  • Discussion 3
  • Summary

Today I do a special test and report on the Seneca Eagle Claw lever action for a reader. 1stBlue, named Rob, asked me the following.


Good morning sir, I am curious to know if you might consider shooting a string with a slightly higher starting velocity from a fresh 2 bar fill, to see if the jump in velocity that occurs with this technique can be flattened out a bit? So start at 4 clicks on the power wheel, and use the same method. It works well.


This was my answer.


I will do it for you, but I think it won’t flatten that much.


I said that because of my previous experiences with Korean precharged pneumatics (PCPs). They are generally set up for all or nothing. However, in the interest of exploring the possibilities, let’s now see what Rob’s suggestion gives us.

Filled to 200 bar

I filled the rifle to 200 bar and then set the power wheel 4 clicks up from the bottom. Since there are 7 clicks on the power wheel, this is exactly in the middle.

The test

I shot the same H&N Baracuda Match pellets that I used in the tests in Parts 2, 3 and 4, just to keep things the same for today’s comparison. The first string averaged 958 f.p.s. with a spread of 13 f.p.s. from 951 to 964 f.p.s. The standard deviation was 4.58 f.p.s. And I need to tell you something about these numbers.

When I report the velocities I always round off the numbers. The chronograph gives decimal fractions and I round off. I use the standard convention of rounding up if the number to the right of the decimal is five or more and down if it’s 4 or less. That makes the velocity numbers cleaner in my opinion, and we all know there is some slight error in the numbers, due to small inaccuracies in the chronograph. Therefore I report the average as a whole number, too, even though the chronograph might say that it’s a decimal fraction. But the standard deviation is a number generated by a complex formula, so I am reporting that exactly as it appeared on the chronograph. That’s why it will usually be a decimal fraction.

String two

Shooting at the same power setting of 4 clicks up from the bottom, the second string of 10 Baracuda Match pellets averaged 964 f.p.s. The extreme spread for this string was 19 f.p.s. and the standard deviation was 7.07 f.p.s. The low velocity was 955 f.p.s. and the high was 974 f.p.s.

Discussion 1

String two shows us several things. First, the average velocity is 6 f.p.s. faster than string one. That tells us that at 4 clicks up from the bottom, the 200 bar fill was just a bit too much pressure to start with and when the pressure dropped by about 20 bar, this power setting became optimum (i.e. max power). The high for this string was 974 f.p.s., which is the fastest shot we have recorded with this pellet.

And there is more to see if you look at the string, shot by shot. Let’s do that. I will number the shots from the initial fill.


Looking at this string I can see something that I have seen with other Korean hunting airguns. Shots 14 and 15 are the peak shots. The velocity starts dropping linearly after those two shots. The Eagle Claw is falling off the power curve for this power setting and pressure in the reservoir. To demonstrate that more clearly, I shot a third string and got the following results. There was 160 bar air pressure in the reservoir at the start of this string.


It’s pretty obvious, right? The Eagle Claw can’t sustain its velocity at this power setting. So at this point I moved the power wheel up a notch, to 5 clicks up from the bottom. And then I shot the remaining 5 shots.


At the end of this string of 10 shots there was 140 bar of pressure remaining in the reservoir. Since the power was dropping I adjusted it up to 6 clicks up from the bottom. Remember — there are only 7 power adjustments on the power wheel of this rifle, so we are almost at the top.


Okay — time to go all the way to the top.


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Discussion 2

Is anyone not aware that we have reached the end of the useful air charge? So, Rob, these are the results I got when starting with a fresh fill and with the power setting 4 up from the bottom. 

Now let’s compare today’s results to what we saw in Part 4, where I started with 3 clicks up.

Starting with 3 clicks up from the bottom netted an average 927 f.p.s. on the first string of ten shots. String two in that test did the same thing as strings 2 and three in today’s test. It started high at 934 f.p.s. but on shot 5 (for the second string, which is shot 15 on the fill) it started dropping linearly and ended at 897 f.p.s. I think the power wheel should have been adjusted up to 4 clicks up from the bottom for the entire second string.

I did adjust the power up to 4 clicks from the bottom on the third string. And the rifle registered 964 f.p.s. on the first shot of the third string, which was shot 21 from the fill. By the end of that string, the velocity with this same Baracuda Match pellet registered 944 f.p.s. For the record that is a string of 33 shots, where the highest velocity with the Baracuda Match pellet was 965 f.p.s and the lowest velocity was 897 f.p.s.

I was then able to adjust the power to 5 clicks from the bottom and got a string (shots 31 to 40) that was 954 at the top and 908 at the bottom.

Discussion 3

What I think has to be done is to be willing to accept a total velocity swing of about 40-50 f.p.s. for the fill and begin shooting at 3 clicks up from the bottom. Shoot the entire first string on that setting. Then shoot the next 5 (shots 11 to 15) on 3 clicks up and then adjust up to 4 clicks for the remaining 5 shots. For the third string (shots 21 to 30) adjust 5 clicks up from the bottom at the start and in the middle of that string, adjust the power up all the way.


I believe that the Eagle Claw gets about 30 good powerful shots on a fill, when the power wheel is adjusted carefully. You have to be willing to accept my 40-50 f.p.s. spread over those 30 shots. Thanks to Rob’s question and today’s test I believe that has been resolved.

This is as far as I will take the velocity test. I now want to test accuracy, because several readers are waiting to see what the Eagle Claw will do. If it’s like other Korean hunting air rifles the accuracy should be pretty good.

author avatar
Tom Gaylord (B.B. Pelletier)
Tom Gaylord, also known as B.B. Pelletier, provides expert insights to airgunners all over the world on behalf of Pyramyd AIR. He has earned the title The Godfather of Airguns™ for his contributions to the industry, spending many years with AirForce Airguns and starting magazines dedicated to the sport such as Airgun Illustrated.

17 thoughts on “Air Venturi Seneca Eagle Claw lever action repeater: Part 5”

  1. BB

    Agree with Siraniko, think that he hit it right on – it’s a hunting rifle meant for a few shots at high power.

    If I had one of these I would find the best pellet, fill pressure and hammer spring setting and just accept that it was a good hunter that got 10 shots on a fill.

    Can’t see a casual shooter being bothered keeping track of the shots and dialing in the hammer spring throughout the fill.

    Doubt that the 50 fps spread is advertised so many people intrigued with the lever-action design will be disappointed (because they don’t understand the power curve thing) in the (apparently “poor”) performance of the rifle.

    Interesting rifle, good power, but IMHO it really needs a regulator to be casual shooter friendly. Guessing, but I bet that a “max power” setting (around 925 fps) would yield 50 shots per fill and a “best accuracy” setting (around 890 fps) would get another 10-15 shots.

    Just my 2 cents.

  2. BB,

    Finally had a chance to read yesterday’s and today’s blogs.

    I am glad to see they managed to get something right with the removal of the rear sight. It is a shame the new stock is unusable with open and peep sights though. I think they may have it right with their new multi-pump. Can you say “updated 100 series”?

    Now for the Eagle Claw. This air rifle makes me wish I had not bought the Maximus. It is a hunter with class. I never could get into the shotgun looking Korean air rifles, most especially with all of the engraving on the receiver. This thing however is awesome looking, IMMHO. I would not mind one of these hanging around RRHFWA.

    • Once the 362 comes out, if it is any good, I don’t see why someone would buy a 392s.

      By choosing 362 as the new model number, I see it replacing the 392s. Wonder why the effort was put in the redesign of the 393 synthetic stock. Must have been a change in direction about the time the 392 synthetic stock started production. The 362 should cost much less to produce than the 392.


  3. BB, Thanks for checking, it would have been neat to flatten the jump in veocity that occurs when turning up the power adjuster. It is good to know also when to expect changes in P.O.I. in the shot string, and then compensate, so shot tracking can be a problem for my rememberer. Hopefully this lever gun will be accurate. I turned the velocity down from 860fps in the marauder pistol to about 800 fps. I dont get as many fliers now with the Crosman .22 ammo, seems to do as well as the more pricey FTT now. I guess that is the nature of this particular barrel. You have persuaded me to tear apart the Synergis one more time, and try putting in a milder spring than the gas ram it had in it. Only because I can’t bear to toss it out, it has a good barrel, I like the magazine, I know its accurate, just not fun for me to shoot it. That’s what the R10 is for. Good work!

  4. BB
    Today going on to the PA site as normal and scrolling down to the blog. It was not showing up. There was a little spot to click on then when I did todays blog finally came up.

    So not sure what is up with that.

    Maybe why not very many comments today.

    People can’t find the blog.

    Heres a screen shot of what I’m talking about today.

  5. And probably should wait to post so more might want to see because of the website thing going on today.

    But got this today. A big thanks FM. 🙂

    Going to be Bug Blast’n this weekend no doubt.

    I just love when a new air gun serves a purpose. More reason to try it out.

    And my wife and daughter already want to start shooting it.

    Next unforeseen problem for Bug A Salt. The old springer might not survive after this gun gets reconized.

    Already got a few things I’m looking at. Reloading the mags and Co2 shot count.

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