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All Springer/NP/PCP Air Gun Discussion General => PCP/CO2/HPA Air Gun Gates "The Darkside" => Korean Gate => Topic started by: Tims229 on January 29, 2016, 06:15:08 PM

Title: My jkhan bullpup .25 arrived today!
Post by: Tims229 on January 29, 2016, 06:15:08 PM
Had little time to put glass on (aeon 8x32) and get a few shots in before an appointment. I'll be posting string hopefully this weekend. This thing is a beauty!
Title: Re: My jkhan bullpup .25 arrived today!
Post by: Tims229 on January 29, 2016, 06:16:27 PM
Going to have to get a riser though, ordered mid height rings. Silly me...
Title: Re: My jkhan bullpup .25 arrived today!
Post by: stealthhunt on January 29, 2016, 06:17:14 PM
wow! nice wood stock! am jealous now LOL!
Title: Re: My jkhan bullpup .25 arrived today!
Post by: LEE IN VA. on January 29, 2016, 06:27:14 PM
Yeah definitely needs tall rings.  Is yours regulated?  Looks good.
Title: Re: My jkhan bullpup .25 arrived today!
Post by: Tims229 on January 29, 2016, 06:35:10 PM
Yeah definitely needs tall rings.  Is yours regulated?  Looks good.

Yes regulated. Something new to me so I have some learning to do but I'm excited to see the strings
Title: Re: My jkhan bullpup .25 arrived today!
Post by: Tims229 on January 29, 2016, 06:36:56 PM
wow! nice wood stock! am jealous now LOL!
Thanks! It's even more impressive in person.
Title: Re: My jkhan bullpup .25 arrived today!
Post by: Nomadic Pirate on January 29, 2016, 06:42:48 PM
All I read so far about them guns is been positive.

Title: Re: My jkhan bullpup .25 arrived today!
Post by: Djbriez on January 29, 2016, 06:46:39 PM
You will LOVE this rifle!.... Wait until you shoot some 50 yard groups! 

DJ
Title: Re: My jkhan bullpup .25 arrived today!
Post by: LEE IN VA. on January 29, 2016, 06:57:05 PM
Yeah definitely needs tall rings.  Is yours regulated?  Looks good.

Yes regulated. Something new to me so I have some learning to do but I'm excited to see the strings

What power?  Ones I've read about regulated are low 40 fpe. Closer to 50 would be better to me.
Title: Re: My jkhan bullpup .25 arrived today!
Post by: robertr on January 29, 2016, 07:28:30 PM
Congrats on your new rifle, looks very nice.
Title: Re: My jkhan bullpup .25 arrived today!
Post by: Tims229 on January 29, 2016, 08:20:23 PM
Yeah definitely needs tall rings.  Is yours regulated?  Looks good.

Yes regulated. Something new to me so I have some learning to do but I'm excited to see the strings

What power?  Ones I've read about regulated are low 40 fpe. Closer to 50 would be better to me.

I'll be certain to post my strings on this thread. Will most likely get those tomorrow, but yes I'm hoping for 45 to 50 fpe.... We will see
Title: Re: My jkhan bullpup .25 arrived today!
Post by: LEE IN VA. on January 29, 2016, 08:34:19 PM
Yeah definitely needs tall rings.  Is yours regulated?  Looks good.

Yes regulated. Something new to me so I have some learning to do but I'm excited to see the strings

What power?  Ones I've read about regulated are low 40 fpe. Closer to 50 would be better to me.

I'll be certain to post my strings on this thread. Will most likely get those tomorrow, but yes I'm hoping for 45 to 50 fpe.... We will see

Looking forward to your results.  So many nice guns out there now and I've got money burning a hole in my pocket.  LOL!
Title: Re: My jkhan bullpup .25 arrived today!
Post by: Tims229 on January 29, 2016, 09:35:44 PM
So rlairguns is where I purchased this beauty. They test fire 5 shots and chrono a ten shot string. By my calculations it is running around 40 fpe with jsb 25.4 pellets. I will be pushing the jsb heavies tomorrow when I check. Plus I'm cleaning barrel tonight as well. Tomorrow will tell us the full story. If it's in the 40 fpe range I'm going to have to adjust up at some point.
Title: Re: My jkhan bullpup .25 arrived today!
Post by: LEE IN VA. on January 29, 2016, 09:42:18 PM
From what I've read they are getting great accuracy at that fpe. Just a bit low for a .25.
Title: Re: My jkhan bullpup .25 arrived today!
Post by: Tims229 on January 29, 2016, 10:11:54 PM
I agree, I'm used to my Condor SS, which is in the mid 50s with an o ring behind the top hat.
Title: Re: My jkhan bullpup .25 arrived today!
Post by: TleVta on January 29, 2016, 10:19:41 PM
Tim,

I'd like to know how much it weighs with the scope on if you get anywhere near a scale, please.
Title: Re: My jkhan bullpup .25 arrived today!
Post by: Tims229 on January 29, 2016, 10:51:40 PM
Right at 9.8 with aeon 8 to 32 x 50 sf, set of utg quick detach rings, and a set of risers because I got the mid height rings. I have the walnut stock option. Honestly though it carries quite nicely. Feels good in my hands and shoulders easily. At the range today shooting was not comfortable, but that was because I hadn't gotten the risers yet. Tomorrow will be a better test and the chrono will go with me also.
Title: Re: My jkhan bullpup .25 arrived today!
Post by: smythsg on January 29, 2016, 10:56:38 PM
Great looking rifle Tim. Maybe when my P12 grows up it will morph into one of those like a butterfly... ;D
Title: Re: My jkhan bullpup .25 arrived today!
Post by: Tims229 on January 29, 2016, 11:05:36 PM
Great looking rifle Tim. Maybe when my P12 grows up it will morph into one of those like a butterfly... ;D

Thanks, I'm pretty dang happy so far. Wish it was tomorrow so I could be shooting her! We all know that feeling when we first get a new airgun.
Title: Re: My jkhan bullpup .25 arrived today!
Post by: Bwalton on January 29, 2016, 11:43:49 PM
I did a review on one a while back nice rifle go get 'em!
Title: Re: My jkhan bullpup .25 arrived today!
Post by: Tims229 on January 29, 2016, 11:57:45 PM
I did a review on one a while back nice rifle go get 'em!

I watched your review Bwalton, you helped pull me in that direction, thanks for that! Do you happen to know what regulators they install at rlairgunsupply?
Title: Re: My jkhan bullpup .25 arrived today!
Post by: Bwalton on January 30, 2016, 10:37:53 AM
Yes they use my partners Nicks Air Superiority Regs
Title: Re: My jkhan bullpup .25 arrived today!
Post by: Tims229 on January 30, 2016, 11:41:24 AM
Is that the huma? The one you did a video on?
Title: Re: My jkhan bullpup .25 arrived today!
Post by: Bwalton on January 30, 2016, 01:58:25 PM
Yes
Title: Re: My jkhan bullpup .25 arrived today!
Post by: Tims229 on January 30, 2016, 03:00:43 PM
Ok here's the chrono results

Created: 01-30-2016 11:37:00 AM
Description: jkhan pup
Distance to Chrono (FT): 6.00
Ballistic Coefficient: 1.000
Bullet Weight (gr): 33.950
Temp: 35°F
BP: 30.11 inHG
Shots
#     FPS        FT-LBS     PF
30    697        36.63      23.66   
29    697        36.63      23.66   
28    706        37.58      23.97   
27    705        37.47      23.93   
26    717        38.76      24.34   
25    718        38.87      24.38   
24    732        40.40      24.85   
23    731        40.29      24.82   
22    743        41.62      25.22   
21    743        41.62      25.22   
20    745        41.85      25.29   
19    754        42.86      25.60   
18    753        42.75      25.56   
17    761        43.66      25.84   
16    764        44.01      25.94   
15    760        43.55      25.80   
14    762        43.78      25.87   
13    753        42.75      25.56   
12    763        43.89      25.90   
11    753        42.75      25.56   
10    ERROR 2
9     756        43.09      25.67   
8     763        43.89      25.90   
7     756        43.09      25.67   
6     758        43.32      25.73   
5     761        43.66      25.84   
4     760        43.55      25.80   
3     764        44.01      25.94   
2     761        43.66      25.84   
1     758        43.32      25.73   
Average: 744.62
StdDev: 21.83
Min: 697
Max: 764
Spread: 67
True MV: 745.13

I did a full 30 shots to see how far it would drop off after I got below the regulator setting. It would appear after 20 shots is where that happened. I'm pretty happy for now with these results. There is kind of a springy twang when she shoots, not terrible, just used to the Condor. It is super stable shooting off of a bag on the bench. Unfortunately the clouds rolled in just as I got to the range, 35 degrees with an unprotected with wind around 10 to 15 drove me of the range before I could do any longer range shots than 25 yards. My hands can't handle that cold without gloves anymore. On that note, this trigger is very nice and predictable, I'd say half the weight of my condor with much less 1st stage. Can't wait for a warmer day to send some long range with this baby!
Title: Re: My jkhan bullpup .25 arrived today!
Post by: Bwalton on January 30, 2016, 05:26:21 PM
looks like you are getting 17 shots before it falls off. Also make sure that you allow time between each shot for better results.
Title: Re: My jkhan bullpup .25 arrived today!
Post by: Tims229 on January 30, 2016, 05:37:45 PM
The regulator is set right at 150 bar or 2175 psi. At least that is what the rifle guage shows, and it's on the related side of the tube.
Title: Re: My jkhan bullpup .25 arrived today!
Post by: Tims229 on January 30, 2016, 05:38:58 PM
looks like you are getting 17 shots before it falls off. Also make sure that you allow time between each shot for better results.

To allow the regulator to fill?
Title: Re: My jkhan bullpup .25 arrived today!
Post by: Bwalton on January 30, 2016, 09:29:10 PM
Yes 10secs or so
Title: Re: My jkhan bullpup .25 arrived today!
Post by: Tims229 on January 30, 2016, 09:44:17 PM
Thanks B,good info to know. I was firing them off about half that time between. Guess I have to go chrono it again. ...Darn hehe
Title: Re: My jkhan bullpup .25 arrived today!
Post by: Tims229 on January 31, 2016, 05:57:39 PM
Here are some bench rested shots at 100 yards with her. I got my father, uncle, brother, and my youngest behind it for some shooting. This photo is of my youngest and I shooting at 100 yards. I believe 30 pellets turned loose at this target. Pretty sure they all hit the target. Was hard to tell with that large ragged hole little high and to the right. Wind was blowing behind over my left shoulder.
Title: Re: My jkhan bullpup .25 arrived today!
Post by: Tims229 on January 31, 2016, 06:09:35 PM
Here's a 7 shot group my youngest took at 50 yards. The target is 8 in target with the inside orange is 4 in. He's not to shabby a shot.
Title: Re: My jkhan bullpup .25 arrived today!
Post by: Djbriez on January 31, 2016, 07:13:52 PM
Nice shooting for the youngster Tim!

DJ
Title: Re: My jkhan bullpup .25 arrived today!
Post by: Tims229 on January 31, 2016, 07:19:28 PM
Nice shooting for the youngster Tim!

DJ

Thanks, start them young 😉
Title: Re: My jkhan bullpup .25 arrived today!
Post by: LEE IN VA. on January 31, 2016, 07:45:34 PM
Nice shooting. What pellets?
Title: Re: My jkhan bullpup .25 arrived today!
Post by: Tims229 on January 31, 2016, 07:55:50 PM
Nice shooting. What pellets?

The JSB exacts mkII 33.95 grain. No sorting, just out of the tin.
Title: Re: My jkhan bullpup .25 arrived today!
Post by: Tims229 on January 31, 2016, 10:03:08 PM
#   FPS   FT-LBS   PF      
1   757   43.21   25.7      
2   754   42.86   25.6      
3   760   43.55   25.8      
4   759   43.43   25.77      
5   759   43.43   25.77      
6   754   42.86   25.6      
7   756   43.09   25.67      
8   755   42.98   25.63      
9   756   43.09   25.67      
10   759   43.43   25.77      
11   759   43.43   25.77      
12   758   43.32   25.73      
13   757   43.21   25.7      
14   759   43.43   25.77      
15   755   42.98   25.63      
16   758   43.32   25.73      
17   756   43.09   25.67      
18   758   43.32   25.73      
AVG   StdDev   Min   Max   Spread   TrueMV
757.17   1.89   754   760   6   757.68


This was another chrono string I shot today while at the range with my Noblesse pup.  It dropped off after 18 shots with this string, but velocities are closer than one I did prior.  I waited ten seconds between shots as BWalton had suggested.  That really seemed to help.  Good tip for a rookie regulated airgun user as myself.  I really like the consistency of this rifle.  I have been used to the "bell curve" that I had gotten with my Condor, which can still be accounted for as you get used to it, but this consistent velocity right off the bat through the first 18 shots is nice.
Title: Re: My jkhan bullpup .25 arrived today!
Post by: Bwalton on January 31, 2016, 10:07:27 PM
Thats real nice ;)
Title: Re: My jkhan bullpup .25 arrived today!
Post by: Tims229 on January 31, 2016, 10:15:44 PM
Thats real nice ;)

Thanks for the tip B. As you see, helped quite a bit.
Title: Re: My jkhan bullpup .25 arrived today!
Post by: stealthhunt on February 02, 2016, 04:42:23 PM
Baxter, last night I watched your review of this gun on Youtube while you were out somewhere at a cow farm for pest control. the gun looks ergo. must be very comfy to handle and shoot!
Title: Re: My jkhan bullpup .25 arrived today!
Post by: Luis Lasso on February 03, 2016, 01:17:01 AM
Going to have to get a riser though, ordered mid height rings. Silly me...

I also find that the scope sits very low on top of the receiver leaving my head/neck in an uncomfortable position to sight through the scope, had to install a 20mm riser block and high mounts.
I have a proper cheek weld with this set up, though I am afraid there is too much clearance between the scope and barrel. :P,  Not the most ergonomic rifle plattform IMO.

Title: Re: My jkhan bullpup .25 arrived today!
Post by: Bwalton on February 04, 2016, 12:18:45 AM
Baxter, last night I watched your review of this gun on Youtube while you were out somewhere at a cow farm for pest control. the gun looks ergo. must be very comfy to handle and shoot!

Its not bad at all...
Title: Re: My jkhan bullpup .25 arrived today!
Post by: Nomadic Pirate on February 04, 2016, 02:06:36 AM
Going to have to get a riser though, ordered mid height rings. Silly me...

I also find that the scope sits very low on top of the receiver leaving my head/neck in an uncomfortable position to sight through the scope, had to install a 20mm riser block and high mounts.
I have a proper cheek weld with this set up, though I am afraid there is too much clearance between the scope and barrel. :P,  Not the most ergonomic rifle plattform IMO.




That's the big shortfall of BullPups, you can only get your face so low since you are on the receiver, that's the one thing I didn't like about Pups.

 
Title: Re: My jkhan bullpup .25 arrived today!
Post by: Tims229 on February 04, 2016, 07:49:48 AM
The  cocking lever isn't in the best spot either. A little more time behind it and I'm sure I'll figure out a way that works.
Title: Re: My jkhan bullpup .25 arrived today!
Post by: Djbriez on February 04, 2016, 11:23:37 PM
The  cocking lever isn't in the best spot either. A little more time behind it and I'm sure I'll figure out a way that works.
I find that to be true on every BP that I own..... None are optimal, you just get used to it.

DJ
Title: Re: My jkhan bullpup .25 arrived today!
Post by: nappyman on February 05, 2016, 12:04:17 AM
If your going to use for hunting, get a bigger plume and raise the reg up some. Or drop down to 25.4g cause those numbers are really LOW🙀  But if it's more than enough speed for your needs then I stand corrected. Decent gun though, I have some trigger time with one, it shot well. Enjoy
Title: Re: My jkhan bullpup .25 arrived today!
Post by: TleVta on February 05, 2016, 12:51:21 AM
What is a "plume", Mr. Nap?
Title: Re: My jkhan bullpup .25 arrived today!
Post by: nappyman on February 05, 2016, 01:50:39 AM
If I spelled it right🤓 Anyway it's the chamber or space between the regulator and the mouth of the  valve entry way. For instance my RSII .25 has a huma in it. The plume 🤓 That came with it is for 177-.25 I didn't like the numbers so I had them send me a plume🤓 Designed for the .30cal now I have it turned down 25.4 @ 906fps for 16 shots and that's with the hammer tension almost all the way out. 3/4 turn in its at 930fps . The reg is set at 152bar.  These regulaters go to 165bar. When I decide to shoot 34g jsb I can turn reg up and with the extra size plume🤓  Reach 880-900fps. Maxed out with the regular plume I could only get 800fps with 34g. Hope this explained what your were asking  neighbor 😀
Title: Re: My jkhan bullpup .25 arrived today!
Post by: Tims229 on February 05, 2016, 08:47:53 AM
If your going to use for hunting, get a bigger plume and raise the reg up some. Or drop down to 25.4g cause those numbers are really LOW🙀  But if it's more than enough speed for your needs then I stand corrected. Decent gun though, I have some trigger time with one, it shot well. Enjoy

Eventually it will be used for hunting. Mostly what I was looking for was how consistent of a shot string I could get as this is my first regulated rifle. Speeds are a little slow I agree, the regulator was set at 150 bar and installed when I got the rifle. I'll most likely bump it up at some point. Right now I'm just getting used to how it shoots and such. I saw a YouTube video showing a larger plume being installed with a Huma regulator, so I know what you referring to. Basically it allows a larger amount of area for the regulated air pressure beyond the regulator. This way, more air is available to be released at the regulated pressure on each shot.
Title: Re: My jkhan bullpup .25 arrived today!
Post by: Tims229 on February 09, 2016, 01:47:50 PM
Well I decided to adjust my Huma regulator up a bit to see what kind of numbers I would get.  Randy at rlairguns suggested that I make a small adjustment, so that's what I did.  I might have needed to go a bit more, but time will tell.  I took the rifle out to run a chrono test, here are the results:

Created   Description   Notes1   Notes2   Distance   Coeff   Weight   Temp   BP
2/9/2016 10:34   noblesse adjusted         6   1   33.95   9 °F   30.23 inHG
#   FPS   FT-LBS   PF               
1   775   45.29   26.31               
2   771   44.82   26.18               
3   772   44.94   26.21               
4   771   44.82   26.18               
5   771   44.82   26.18               
6   767   44.36   26.04               
7   768   44.47   26.07               
8   770   44.7   26.14               
9   766   44.24   26.01               
10   769   44.59   26.11               
11   770   44.7   26.14               
12   766   44.24   26.01               
AVG   StdDev   Min   Max   Spread   TrueMV         
765.56   2.64   766   775   9   766.08         


Now, it was 9°F out when I did this test.  -9°F windchill so it was tough to wait between shots to let the regulator equalize.  I am not sure the effect of these temps on the performance of PCPs, but I was hoping for a bit more rise in fps and fpe.  If anyone knows if there is an effect let me know, otherwise I need to pull the regulator out again and bump it up a bit more.  I was hoping to get in the 800 fps range with consistent string. 
I did shoot six more pellets in this string, but I was obviously off the regulator at that point as the fps were dropping off.
Title: Re: My jkhan bullpup .25 arrived today!
Post by: TleVta on February 09, 2016, 11:43:11 PM
Hope this explained what your were asking  neighbor 😀

Yes, thank you. And it's also referred to as the plenium, correct?
Title: Re: My jkhan bullpup .25 arrived today!
Post by: tinsoldier on February 11, 2016, 04:01:20 PM
How it the loudness report comparing to the SS condor?  Does it come with factory removable shroud or that an option? Also, when you bought from RLairgun, did they install the regulator and give you the chrono reports? I am just about to pull the trigger on one but want to make sure it is backyard friendly for the .25
Title: Re: My jkhan bullpup .25 arrived today!
Post by: Tims229 on February 11, 2016, 07:14:50 PM
A bit louder than my condor. Did not come with the shroud, they are out of stock at the time. If you select regulated then it will come installed with a chrono test and 5 shot group. Hope this answers your questions.
Title: Re: My jkhan bullpup .25 arrived today!
Post by: badgerfarm on February 17, 2016, 02:04:05 PM
Yes, TLeVta plenum is the word that you are looking for.  The right plenum volume is critical for proper regulator function.
Title: Re: My jkhan bullpup .25 arrived today!
Post by: Tims229 on February 17, 2016, 06:11:54 PM
I got the pup out to run a string in a little warmer weather....31°F.  I decided to run 40 shots through it which is 4 fully loaded mags, just to see where it would end up with that many shots knowing I would be off of the regulator at some point.  Ended up getting about 23 shots before going off the regulator, but even off the regulator the velocity stayed up pretty decent the remainder of the shots.  I was at the 20 yard range while doing this string and the shots did not drop at all during this string, which makes me feel good going hunting without any extra air with me because I rarely shoot much over a dozen times while hunting.


Created   Description   Notes1   Notes2   Distance   Coeff   Weight   Temp
2/17/2016 0:00   noblesse         4   1   33.95   31°F
#   FPS   FT-LBS               
1   775   45.29               
2   771   44.82               
3   768   44.47               
4   767   44.36               
5   767   44.36               
6   768   44.47               
7   766   44.24               
8   770   44.7               
9   768   44.47               
10   771   44.82               
11   764   44.01               
12   764   44.01               
13   770   44.7               
14   775   45.29               
15   767   44.36               
16   762   43.78               
17   771   44.82               
18   768   44.47               
19   767   44.36               
20   763   43.89               
21   766   44.24               
22   770   44.7               
23   766   44.24               
24   760   43.55               
25   759   43.43               
26   761   43.66               
27   756   43.09               
28   751   42.52               
29   743   41.62               
30   740   41.29               
31   731   40.29               
32   733   40.51               
33   727   39.85               
34   718   38.87               
35   708   37.79               
36   706   37.58               
37   707   37.69               
38   699   36.84               
39   690   35.9               
40   692   36.11               
Min   Max   Spread   AVG   Av FPE         
690   775   85   751.125   42.5865