Wildcat 22 MK I

Try predator gto pellets

Sorry, No luck. It seams I have the best luck with heavy pellets

That's my favorite go-to gun. I shoot the 18 grain JSB. With 15 grain JSB's the accuracy suffers slightly but not bad. For some unknown reason my particular gun suffers in accuracy when tuned lower. It loves to be shot with heavier pellets shooting hot. Good luck. sylvan

I shoot 15.89 gr jsb out of my. I get great accuracy on factory settings at 50-80 yrds. My is mk2 though. 

The 18.13 jsb's are excellent and accurate but i shoot at a club that limits the force to 20lbs. I am pushing about 28 ft lbs. when i back off on the hammer spring i can get to 20 lbs but the accuracy is poop has anyone had any luck with lighter pellets ? and the wildcat

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I'm not sure if other's understand what your asking, or maybe I'm reading into this wrong. If I understanding your question right, you'll need to slow down a .22 pellet weighting 12 grain to 880 FPS. That will put under your 20lbs limit at 19.33 lbs. I doubt you'll be able to do this with your Wildcat and retaining any accuracy. The fight curve will be huge if your using 15.9gr pellets. You'd have to have your FPS below 20lbs you'll need to have your speed below 770FPS. It will fill like a soft ball pitch

Jsb's has 13.4gr pellets that you may try. You'd have to have your FPS below 840. That would have you at 19.66lbs. But I've never had any luck get great accuracy with these pellets.

The tune your using now with 18.13gr pellets at 28lbs catculates to about 860FPS. Maybe your gun I'll like the 13gr pellets at 840fps. It's worth a try!

Well...I guess this is a good excuse to pick a .177, 

Do you shoot indoors, or outdoors? If you shoot outdoors it might be hard to get the same accuracy with lighter pellets because of wind drift.

But in the UK they do shoot way lower than previous mentioned speeds with good results, so I see no reason why it should not be doable.

What you might try is to continue testing going even lower than the speed which get you the desired foot pounds. I have a wildact mk2 in .177, and have found out sometimes the accuracy gets better when lowering spring tension more than intended.

My wildcat has a reg pressure of 105 bar, and it seems to shoot best at around 820-830 fps, even I intended to shoot at 870-880. In my case the extreme spread when shooting over a chronograph also gets worse if I adjust speed up in 850-870 fps range. I can go beyond 900 with same regpressure and get closer to maximum speed with litle speed variation, but it is still not as accurate as going lower. I am guessing it has to do with the harmonics of the gun. So in your case if you only test the speeds which gets the pellet you are testing just below 20lbs, you may not still have reached the best accuracy for the pellet you are testing.

Maybe visiting som UK based forums for advise would be a good idea, as they probably are quiet experianced tuning for lower power? As I understand you do not have to go as low as UK based legal limits, but somewhere inbetween that, and what you current have.