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Kral Airguns and Wicked Air Rifles Tune

Hi Guys,

So I got my gun back from WAR a couple of days ago and had some time to evaluate it. First let's discuss the noise. Prior to any modifications, it was very loud. Using a sound meter on my Ipad Pro I was getting consistent readings that fluctuated around 104db -106db. It seemed kind of nervy to put the word "silent" in the name of the gun on their part. The shroud was turned around and there is a total of 7 baffles and a spring to keep the baffles secured tightly. Spring goes in first, then the 7 baffles. For anyone who has not seen the instructions on turning the shroud around here is how it is done:

1) Remove the grub screw in the shroud. The grub screw is holding a small, round, metal piece that has threads in it that allow the shroud to be secured to the threaded part of the barrel (on the crown area). 

2) Next you unscrew the shroud and the end cap off of it and use a cleaning rod to remove the threaded piece. It has an oring on it so it fits tightly.

3) After it is removed just turn it around and push it back into the shroud making sure to line the hole up in the shroud with the hole in the threaded piece so you can put the grub screw back in once the threaded piece is back in the shroud facing the other way with the holes lined up. It can be a pain to line up the holes as the piece moves a bit when pushing it in. There is no ping either. I sort of expected that the law of diminishing marginal utility would kick in after adding more than the four baffles but it seems the contrary. I decided the reduction of noise was worth the extra 2 1/2 inches of length so left the shroud backwards and now get decibel readings around 89db.



Next lets move to power. Prior to sending it off, I was unable to successfully get any higher than 32 fpe without either not being able to cock the gun or have it cocked and not be able to pull the trigger from adjusting the hammer spring. Kind of confusing as I see other members were able to get to 36 fpe, although there are some problems with cocking levers and such I saw mentioned. After the tune I am getting an average of 935 fps with 25.4 grain JSBs. I plan to do a proper shot string as I traded my ProChrono with another member on Gateway for a Combro that will be here today so havent had a chance yet and will post shortly. It is definitely harder to cock the gun now as there are dual hammer springs. I can definitely see that a new cocking lever is needed. I really like what Silent Matt has done so far and look forward to checking it out when completed. Travis also is going to send me a lever once he has them machined. Best part is the power selector still works perfectly, have not had a chance to chrony other power levels yet aside from full but will do so shortly.

Accuracy has and still is incredibly impressive. Before the tune however, the groups seemed to open up a bit after 50 yards, but now I can hit an inch and a half group at 50 consistently. For me, this is actually pretty good. This is mostly my lack of shooting skills as I think the gun is capable of better. It is literally one hole, that is not even that ragged at 25 yards. Fortunately I got lucky with this one. My Air Ranger is the only gun I have ever had that enables me to shoot MOA out to 50 yards, and close even out to 100. Of course with the Hugget Shroud and Moderator it costs 4 times as much as this gun almost. 

Now optics. The mounting of a scope was a frustrating experience for me. I tried multiple scopes and multiple mounts but the configuration from the factory has the mount set way too low. Finally I settled on two UTG 1 inch risers and a Leupold VX2 3-9 X 33 Ultralight. The thing has amazing quality glass and only weighs 9 ounces. The light gathering is so good I can actually see through it at night as long as there is a slight bit of ambient light.





The trigger is the only thing I am not happy with at this point. No matter what I do the first stage seems to long and it is too heavy. I have tried adjusting the one grub screw and honestly don't notice the difference no matter which way I go. The pull was shortened a bit by tightening the nut on the end of the bar though. I am kind of nervous to disassemble the trigger group as I have a bad habit of not being able to successfully reassemble things like it. I would really like to polish the components, if anyone has any pics of instructional nature I would really appreciate it, I did see the ones Strikefast posted but I still don't have the confidence to try it. Come to think of it, I am not happy with the POS picatinny rail either. Very flimsy. 

I will get a proper shot string and some group images up shortly. In summary, it was well worth what the tune cost in my opinion this thing is now a PowerHouse and I would not say tack driver but damn close.
 
I never measured prior to tune but just from recollection I would say it was about 2 inches. With a grain of salt however as most shooting is done from my rv which shakes a bit with wind or passing cars. I was thinking the same thing in terms of lowering the power which is easy with the selector wheel. I will let you know and take photos after I pick up my chrony.
 
I think it would be very beneficial if someone made some sort of a BRIDGE that somehow attaches the scope rail to the receiver to give it more rigidity and that alone could potentially contribute to better accuracy.
The FX Bobcat is a good example.
If someone could develop a reliable mini gas ram it would also be great and do away with hammer springs to stop hammer bounce or a system similar to FXs loosey goosey that really works as intended.

 
"AJ"Is it quieter than just using Marauder baffles and a spring inside the shroud? Do you have a video with sound demonstrating before and after? I would be very curious to know.
I have a video in a topic below that says broke 50fpe with my Kral without breaking the cocking arm. In the video I'm shooting with the barrel just over the camera and the dirt hitting the leaves after shooting in to the ground is just as loud. The dirt was 10 feet away while the shot was only 1 foot away from the microphone. 
 
Olevey-Much thanks for the post, appreciate it! For the first time I understand the process to be able to add 7 mrod baffles and the spring. I thought it required the SHROUD to be turned around and possibly making a new hole/threads for the grub screw. Then there would be the problem of getting the "welded on" rear cap off without destroying it and switching ends for the caps. I had a hell of a time when I 1st got mine and decided to remove the shroud to try and figure out how to do it. Long story short I gave up and when put the shroud back on I didn't understand that the piece inside is free to move. It had moved enough that I was trying to tighten it on the barrel threads & stripped out the threads for the grub. Had to retap for a grub screw a couple sizes larger and then moved the piece inside to what seems to have been the right spot. At least I got it tightened down and can screw the shroud onto the barrel with no problem. I put 3 mrod baffles and the spring in which quieted it down quite a bit. I also got an LDC which REALLY made it noise free but unfortunately having it on seems to have affected accuracy a bit so I'm back to the shroud. I just might turn that piece around. Seems simple enough that a dummy like me could do it without screwing it up. I think. QUESTION: Is there actually a threaded hole that the grub is supposed to fit into in that aluminum piece or an indentation? I just tightened mine up on the side of it after I moved it back in a bit so it would thread onto the barrel.

Thanks!
Ed
 
@Ed,
My pleasure! Yes there actually is a threaded hole on the threaded piece :) that the grub screw goes through the shroud then in to it. I can't really take credit for figuring it out as Travis did it and I just reversed engineered it though.

@thammer What is that silver thing that kinda looks like a regulator beneath the spring. Can I buy one of those if you think it would really help? I have 7 baffles in now and although I dont mind the extra length if I could do without it that would be cool too!

@AJ I took your advice and backed out the hammer spring a bit and now Im shooting the 25.4 at around 865 to 870. Didnt get to it until late so havent been able to really test the groups yet but a cursory look showed them tighten up a bit. I am using this awesome new Chrony, have you guys seen one? Pic below:

blob:http://imgur.com/f8e9ecf8-09f0-4e54-865b-720fca433006
 
I really think a 3-9x in reality is simply not enough scope for 50 yard accuracy testing. I would give it at least a 4-16x or better yet a 20x or more. Use the higher magnification scope for the 50 yard and beyond accuracy evaluation then switch it back to your 3-9x Leupold afterwards which is great for hunting. A cheap Centerpoint AO or Side focus 4-16x from your local Walmart would do just fine for it then within 90 days if you are not happy with the scope you know what you can do but be sure to keep your receipt.
 
I really have to give kudos to Travis at WAR. I bought a 22 Armada (Marauder in tactical clothing) fully WAR everything with Jim Gaska LW barrel shooting 50fpe in 22!!! I backed the power down to between 22-23fpe and am content with it at this power level. At least its there ready and willing if and when needed. As stated in another post, sort of like buying a Supercharged Corvette with grandma driving it.

 
"Olevey"@Ed,
My pleasure! Yes there actually is a threaded hole on the threaded piece :) that the grub screw goes through the shroud then in to it. I can't really take credit for figuring it out as Travis did it and I just reversed engineered it though.

@thammer What is that silver thing that kinda looks like a regulator beneath the spring. Can I buy one of those if you think it would really help? I have 7 baffles in now and although I dont mind the extra length if I could do without it that would be cool too!

@AJ I took your advice and backed out the hammer spring a bit and now Im shooting the 25.4 at around 865 to 870. Didnt get to it until late so havent been able to really test the groups yet but a cursory look showed them tighten up a bit. I am using this awesome new Chrony, have you guys seen one? Pic below:

blob:http://imgur.com/f8e9ecf8-09f0-4e54-865b-720fca433006


This is the stock barrel cap vs one I made. The new ones now only use 4 holes instead of 6 but they are larger ports. Really helps and keeps the length small. 
 
Olevey-Thanks for the answer! I'll need to re-tap that hole to match the grub screw I'm using now if I turn the piece around to use 7 baffles. I'll have to order another set. I had a full set of 7 but managed to destroy one so only have a total of 6 on hand. Right now my replacement grub screw is obviously just butted up to the piece instead of in the proper hole but I don't think it's going anywhere. The way Kral designed the installation of the shroud is pretty lame in my humble opinion , for whatever that's worth.

Ed
 
"thammer"

This is the stock barrel cap vs one I made. The new ones now only use 4 holes instead of 6 but they are larger ports. Really helps and keeps the length small.
thammer - are you planning on selling your end cap? Looks interesting. What kind of groups are you getting out of your 50 fpe tune? It would be great to have a gun this short, at 50 FPE, but it's no fun if it won't hit what I'm aiming at.
 
Using my new Combro cb-625 mk4 chrony I got around to the shot strings results as follows:


Barracuda Hunter Extreme 28.4 grains 200 bar start 160 bar finish

1) 868
2) 862
3) 865
4) 867
5) 867
6) 862
7) 864
8) 862
9) 868
10) 862

JSB Exact King 25.39 grains 160 bar to 140 bar

1) 896
2) 890
3) 883
4) 882
5) 874
6) 882
7) 879
8) 876
9) 867
10) 862

H&N Barracuda 31.07 grains 140 bar to 120 bar

1) 806
2) 803
3) 796
4) 795
5) 793
6) 787
7) 784
8) 775
9) 776
10) 774

Now back to the JSB Kings for reference 25.4 grains 120 bar to 100 bar

1) 830
2) 824
3) 819
4) 812
5) 810
6) 808
7) 803
8) 797
9) 795
10) 787

I think there are a few more decent shots up in there, but 40 high power shots as such is OK in my book. Also, you can see the steady decline in fps. I am pretty satisfied though retaining so many shots after having the power turned up too. Anyone wishing to compute FPE just do this:

FPS X FPS X Grain Weight / 450240 = FPE there you have it, a quite simple formula once committed to memory.
Groups will be coming shortly!
 
"Rod"
"thammer"

This is the stock barrel cap vs one I made. The new ones now only use 4 holes instead of 6 but they are larger ports. Really helps and keeps the length small.
thammer - are you planning on selling your end cap? Looks interesting. What kind of groups are you getting out of your 50 fpe tune? It would be great to have a gun this short, at 50 FPE, but it's no fun if it won't hit what I'm aiming at.
They caps are available now. I can't sell on this site. [email protected] reaches me. 

As for the groupings. I'll be going to the range this week. I have 6-7 pellets and a couple of slugs in .25 to try out. I'll post the results.