Tuning Fx compact mk2 pp tune
- Thread starter addison
- Start date
valve is way to far closed not sure what your hammer spring is as far as max on power wheel i ran mine at almost 4th line is you hammer spring maxed out on power 3 i wouldnt think thats very efficient but im not no pro tuner
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All looks good for a baseline except the HS adjustment...This is from the Airgun Depot site way back. With this you are on the same page as most others.
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The only way to know if it's efficient is to know your pellet speed and weight and your shot count.
You should be able to get at least two full mags shooting 16 grain pellets at 930fps on a 250 fill , if your not getting that your not efficient. That weight and speed should be closer to 66 shots with the reg set at 100 bar as yours looks to be.
I had mine tuned to around 125 bar on the reg pressure, valve rod close to three lines and hammer wheel on max with lots of slack left on hammer spring, and had an astonishing 3 full mags from a 250 bar fill shooting 16 grain JSB pellets@ 945 fps. Unfortunately I didn't record my settings as I had accuracy issues and detuned down and turned out the accuracy issues were from shooting some slugs That Heavily leaded the choke end of my liner. But I'd say that was the most efficient, consistent tune on a Compact I'd seen.
You should be able to get at least two full mags shooting 16 grain pellets at 930fps on a 250 fill , if your not getting that your not efficient. That weight and speed should be closer to 66 shots with the reg set at 100 bar as yours looks to be.
I had mine tuned to around 125 bar on the reg pressure, valve rod close to three lines and hammer wheel on max with lots of slack left on hammer spring, and had an astonishing 3 full mags from a 250 bar fill shooting 16 grain JSB pellets@ 945 fps. Unfortunately I didn't record my settings as I had accuracy issues and detuned down and turned out the accuracy issues were from shooting some slugs That Heavily leaded the choke end of my liner. But I'd say that was the most efficient, consistent tune on a Compact I'd seen.
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All looks good for a baseline except the HS adjustment...This is from the Airgun Depot site way back. With this you are on the same page as most others.
the knew mk 2 has a totally smaller piece to measure from i believe smaller
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Addison, that is the way I measure hammer tension setting. I call it the "short" way, and I do it because I think there is less variability in a shorter measurement. For my .22, 700 mm liner, that measurement is almost exactly the same, 0.210". My reg is exactly the same. My valve, however, is at 0.333" and my wheel is on 5. With 23 gr H&N slugs this give me an average of about 900 fps and very good accuracy.
That said, I think there is no one "correct" tune. For your rifle and projectile, at each velocity, there is a good tune as far as accuracy goes. Some will be more efficient than others. Some optimums will be easier to find. There is probably one velocity at which you can get the very best accuracy and efficiency, but it may or may not be the best for other reasons, e.g. power, range, noise level, etc.
That said, I think there is no one "correct" tune. For your rifle and projectile, at each velocity, there is a good tune as far as accuracy goes. Some will be more efficient than others. Some optimums will be easier to find. There is probably one velocity at which you can get the very best accuracy and efficiency, but it may or may not be the best for other reasons, e.g. power, range, noise level, etc.
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