Cricket .25 accuracy problems
- Thread starter aldea6
- Start date
.25 cal pellets have about a 850 FPS max velocity before they start getting inaccurate. I shoot 25.4 grain JSB Exact King pellets around 820-840 FPS depending on air pressure in my BSA Lonestar .25. A moderator increases speed by about 20 FPS, so if you are slightly over max accurate velocity, removing a moderator can increase accuracy. Try reducing your velocity a bit below 850 FPS and see if that helps. If not, you probably have another issue to resolve. Some rifles may not like JSB pellets, although I find they are the best in my rifles.
Understand that altitude has an effect on maximum accurate speed. I shoot above 3000 feet elevation. At sea level you may have to reduce velocity a bit below what I am shooting at. I would reduce velocity to 800 FPS and increase from there until I found at what velocity accuracy suffers, then back off a bit.
Understand that altitude has an effect on maximum accurate speed. I shoot above 3000 feet elevation. At sea level you may have to reduce velocity a bit below what I am shooting at. I would reduce velocity to 800 FPS and increase from there until I found at what velocity accuracy suffers, then back off a bit.
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Yes , speed is maybe too high, but in a video about the .Cricket .25 I saw Steve shooting JSB 25gr at 950 Ft/s , with good results .
The problem must be elsewhere else ; anyway I'm going to shoot at lower and higher speed to see what happens.
The problem must be elsewhere else ; anyway I'm going to shoot at lower and higher speed to see what happens.
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Speed is fine depending on your twist. Fx liners I can tell you are still accurate over 1000fps with that pellet but apples to oranges. Did accuracy slowly degrade? How accurate was it before? I can tell you clean patches dont mean its clean. Ive seen major leading at the choke and patches were spotless. Let us know if you find anything!
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Send to Georgia Air. Gun should shoot lights out with those pellets at those velocities. My same gun shoots those jsb’s at 940 fps super tight.
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Mine will shoot the 25 at 930 fps moa at 100 yrs. on calm day.
I would try a different scope.
I would try a different scope.
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Scope is a Hawke Sidewinder , but I'll probably put another one just to see , and at the same time check the grub screws holding the barrel . When I shoot the gun , most of the time the 4 or 5 first shots are grouping very well , and then the group moves sideways or below the first one. Difficult to know if the barrel is the problem without trying another one.
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Oh, ok. I thought that pic looked like some group shifting. Def check that barrel is tight and try if a different scope if you can.
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Must probable problem: The scope....
Check if you feel air in your face when shooting. If that's the case, you would have lost the o'ring that seals the chamber just behind the pellet. In that case, when you put the pellet in the barrell the pellet can be damaged by the cavity that should be occupied by the o'ring.
Check if you feel air in your face when shooting. If that's the case, you would have lost the o'ring that seals the chamber just behind the pellet. In that case, when you put the pellet in the barrell the pellet can be damaged by the cavity that should be occupied by the o'ring.
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I saw a video from Ernest Rowe on how to install the barrel back on the Cricket ; I made maybe two mistakes : I torqued too hard the grub screw which indexes the barrel to be sure the transfert port holes are in line , and didn't follow the torquing sequence of the four screws clamping the barrel.
Maybe this could help , unfortunatelly it was too late in the evening to test the gun . If this doesn't work 'll swap the scope......or put an order for the Kalybrgun Argus 60
Maybe this could help , unfortunatelly it was too late in the evening to test the gun . If this doesn't work 'll swap the scope......or put an order for the Kalybrgun Argus 60
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If you buy the Argus 60, the lack of accuracy of your cricket will become a secondary problem to be solved on the time.
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It should not be pellet speed the 885 fps is what i tune both the 22 and 25 to. I've had an Ernest tuned 25 to shoot at 885 with the 25's. My current gun is tuned to do the same with the 33's. That gun shoots the. 25's at about 990. At 73 yards it will hit 1" Christmas balls with both pellets. Maybe you clipped the baffles with a double load. Using Grizzlies or Polymags pellets are all over the place, and the accuracy is not there without the shroud.
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