As the title says I need help. Been trying to tune my .22/600mm Panthera for days now. I am shooting 35gr NSA slugs, wanting them in the 965-975 range. I have tried about every combo of reg pressure to macro wheel to micro wheel i can think of. It will settle in nice for say 10-15 shots then it will start to jump the speeds all over the map. Sometimes as much as 15-20 fps. I am using the fx pocket chrony. I have the minimal return set to 10. I am about 400 slugs into it and getting frustrated as all get out. Please someone help. Thanks
Tuning A bit of help with tuning please
- Thread starter blacksmith304
- Start date
I have never tuned a Panthera, but am sure the people who can help will want to know your reg pressure, power wheel setting and micro tuner setting.
Are you getting good consistency for the 10-15 shots and then coming off the reg pressure by chance?
Are you getting good consistency for the 10-15 shots and then coming off the reg pressure by chance?
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I have tried reg pressure from 145-170. Going up in small incrimates. As far as macro, and micro i have ran the gammit on them. No i am not falling off the reg, i concentrate on making sure i do not
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Clean your barrel. Then push a pellet thru and measure it and compare to slug diameter. Example. Pellet measures 216 and your shooting 218 slugs you might be leaving enough lead somewhere in the barrel to cause problems
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I would start over by setting the reg @ 130 bar, set your power wheel and micro tuner at max. Then increase the reg 5 bar at a time checking your speed with every adjustment. I would fire ten shots at each reg increase to allow everything to settle in. Increase the bar until you are at 980-985 fps, then start backing off the micro tuner until you reach your target speed. You can fine tune for accuracy once you get there.
If that doesn’t work I would call FX USA. They can offer more qualified advice.
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15-20fps isn’t all over the map but it makes me wonder if you’re suffering from slow refresh between shots, as I did with the same setup. Have you looked at the recovery on the gauge between shots?
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Btw, the macro is irrelevant. Only the setting on the micro dictates HST. The macro simply jumps the micro by a set number of clicks as you increase or decrease the number.
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