Best pellet for the taipan standard?
So far I’ve been shooting mine at 30 yds and it stacks pellets. I’ve been using the jsb 18,15, and 14 grn pellets mostly but I have also used the crosman boxed premiers. On Sunday I took it to the range to shoot at 100. The results were not awe inspiring. The jsb 14.35’s did the best. I got home and cleaned the barrel which turned out to be filthy. So today we went back to the range again. I’m not very experienced shooting my airguns at 100 so I brought a control with me. The webley fx2000. It shoots the 14 grn jsb s at 930 fps just like the taipan and I have the same scope on both. To say this gun is accurate is an understatement. Set out the targets and first shot the fx. 4 one inch groups in a row and the last being right under 3/4. So I switched to the taipan. Not so good. I shot all the jsb pellets and the crosmans. My best group was about 3 inches :sadn: . Am I expecting too much from my airguns? Am I spoiled? Or am I not shooting the right pellet? I’m pretty sure it wasn’t me as I could pull the trigger, and not see the reticle move. I watched the pellets hit. I do know my regulator is set at 148 bar as marked on the reg itself. Shooting over the crony reveals its not that consistent yet. Extreme spread of about 35 fps. I guess that could have some negative effects at 100. Any suggestions would be appreciated. Like I said. It stacks em at 30.
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Twisted,
Stop spending your money on expensive airguns and use it fix the darn side frame of your door instead! :winkn:
Just kidding. Great shooting by the way!
nice I love it when a plan comes together
:8:
Finally got my photobucket working. Just thought I’d post some groups after the tune up. After 500 shots it’s still very consistent. The trigger as well. I’ve thought of polishing the sear and engagements but it’s very crisp and I like the way it feels.
My shooting bench. No beauty contestant but it works well. 😀
My 30 yd lane. I’ve got 3 plywood boards plus the fence. Wooded lot behind
There’s two magazines in that hole. Kind of got bored. Put two through the top hole just for fun
And this was my best group at the 100 yd range. Not as good as Kyser but not to shabby.
Just thought I’d share the success. I haven’t even shot my other guns since I got this thing.i can’t wait to take it hunting.
68 shots with a 9 fps spread…. sounds like u found that sweet spot!!! :7:
So to start off this post has a happy ending. And thanks for everyone’s input. Yesterday on other members advice I turned down the HST and started shooting the 18 grn jsb and turned it up until it shot around 910 fps. The problem was that as the tube pressure dropped the fps went up. I shot three groups and it happened the same every time. For those that might know. I turned the HST up and maxed the 18 grn out at 1053 fps. I’m not sure at what pressure this would happen but I was pretty sure there was a problem. So back to the workshop to pull the reg. last time I cleaned the tube I simply pushed out the reg, wiped down the outside and reinstalled it. I did notice it’s set screw was in line with a red line marked at the factory. Pulling it out again I noticed two things. 1 the reg was marked 145 not the 148 I remembered. 2 the set screw was not lined up with the mark but turned out almost a half turn. Inspecting the reg I noticed the set screw was completly loose. Now I take full responsibility for this since I did pull it out before although I don’t know how it could of happened. So I cleaned off the “euro grease” from the inside and out of the internals then turned the reg back down to the line. Then turned it in another 1/4 turn just for fun and tightened everything down. Reassembled the gun and started tuning it back up towards 900 fps. At around 890 it seemed the most consistent as was stated earlier. So yeah you guys were right. I may try something different later but for now I’ll just buy some more 18 grn pellets since I shot a whole tin today. And ran out of air. Had to kick on the shoebox for a few hours. So i ended up with 68 shots from 250 bar down to 135. ES of 9 fps. So yeah, I’m happy. I had some pictures ready but I can’t get my photobucket working right.
I am….
I make 2 different styles….
This is the economy one…. easier on the wallet … but gun specific. uses the front airtube end plug for filling …
Then we got the Deluxe model… Little more spendy…. but u can test more than one gun (with the optional sleeves)
Thanks for the info guys. I will try the 18 grn before doing anymore to it. Maybe the higher reg pressure is not liking how lite my hammer spring is set. I wasn’t really going for max power. I may want to turn down the reg in the near future but I’ll test it before I do. It may be possible that it’s more efficient because the valve is not being knocked open as much? We will see. Dman are you still making those reg testers?
As stated already you should try 18.1s over the chrony, back off hammer spring tension and turn in slowly watching velocity till it peaks at the highest and see where your at. If it’s shooting 18.1s with a peak over 940 or so the reg probably needs to be cleaned up and turned down a 1/4 turn or so. Something isn’t in sync like HST with the reg setting, and or the reg is too full of silicone grease. It sounds like the reg is set too high and the hammer spring is backed off too much to compensate. If so the reg needs to be turned down.
Twisted,
Based on your string, I would suggest cleaning the reg and may reduce the reg pressure to 130 or 135 bar if you want to shoot lighter pellets as indicated by Dman, and adjust the HST to about 90% of max speed for that reg setting. On the other hand, your Mutant is very air-efficient with overall 9.8 cc/fpe, which is even better than 10.4 cc/fpe that Dman got. My number is around 11 cc/fpe. Most guns waste air at high pressure (> 200 bars) and are more efficient at lower pressures (<160 bars). It looks like your Mutant is opposite. Keep us informed on how it goes.
Good luck.
Endo
I’ll try the 18’s a little faster first. And wether it’s the heavy or light pellets the gun will release about the same amount of air. A little more for a heavy pellet I believe. Valve dwell time and all. Shouldn’t make a difference in decibels. Turning the hst down will matter but at the reg setting it doesn’t really like that. I guess I’ll be shooting with the dust collector on. :biggrinn:
Okay this is a string shot with the 15 grn jsb. Filled to 240 bar. HST at .055″ out. A little less than 2 turns. Reg is marked as being 147 bar. as you can see it’s not would you would call consistent. I have non regulated rifles that shoot within 5. Don’t get me wrong, I’m not bashing here. I just want it shooting right. Maybe turning down the regulator.
933 @240
930
929
924
922
914
914
907
906
905
905
908
907
908
908
908
903
907
905
910
915
911
918
909
911
908
908
902
903
906
905
911
906
910
905
908
939 @200
944
907
951
944
951
944
955
911
913 @190
908
914
916
915
913
918
907
918
917
917
920
908
908
909
905
931
920
916
911
914
921
935
902@140
I’ll bet you don’t need to tune it. Just shoot the 18.1. That to me is a way simple fix compared to opening the gun up. Think how many tins of 18s you can buy for the cost of a regulator tester.
Twisted….
14.3 are way to light for how they come setup
Of course it’s gonna be loud.
Shoot the 18.1s …. 15.9s at a min.
Turn the regulator down if you want to shoot them light pellets you will find that efficiency and noise will improve
Twist, a 35 fps extreme spread is about 3x more than it should be. My reg was set at 135 bar and the max speed with that setting is ~905 fps. The HST was adjusted to ~880 fps, the extreme spread is ~9-11 fps and average shot-to-shot variation ~2.0 to 2.3 fps, and it is very accurate in both 30 and 50 yards with JSB Heavy. It would be helpful if you can provide a complete string on your Mutant. It may be solved by a simple fine tune. Good luck.
Regards,
Endo
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Yeah it’s south east Texas. Even bricks will rot! But it’s on the when I have more than one day off list. Thanks bye the way.