So I finally got 25 grain FX pellets to try and was wildly impressed, yet baffled with results. I am not a great long range guy and know I was too quick on the trigger and pulled some shots, but managed to get into near MOA accuracy tonight with the Maverick .22. The real baffling part came when I put it over the chrono after shooting these. I was getting a spread over 5 shots of 945 to 1000FPS. How can these keep a group under 2" if it is jumping around that far?
Confused
- Thread starter bunkeru2k
- Start date
Its only about 1" of additional drop going from 1000fps down to 945fps at 100yds. Your group checks out.
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Ok, that is good that I am not insane. I hate to even touch it since that is the tightest 100 yard groups I have shot with any kind of rifle ever. Of course I am not going to be able to sleep knowing the spread is that high and I can get tighter....so now I am wondering if working pressure up or down a hair might get that down where I want it.
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FWIW, I have found you can reduce extreme spread by weighing your pellets and shooting batches that weigh nearly the same. The closer they are in weight to each other, the closer they'll be in speed, to a point. Discounting wind or other atmospheric conditions or user error, they theoretically shoot to same point. But yours are still pretty close.
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Likely upping pressure will help. Maybe in conjunction with backing off the hammer. Try and see 
Nice shooting btw
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I would also add that the hand drawn circles aren’t an ideal aim point. A cross/plus sign or a smaller solid circle might shrink your groups
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You have it good this way. I tuned my cricket to shoot slugs and had great numbers over the chronograph but couldn't hit paper at 30 yards.
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You might have the same issues as Steve. Inconsistent head diameter and the smooth twist x barrel is sensitive to it
https://www.youtube.com/watch?v=sJ06JSOZUcA
https://www.youtube.com/watch?v=sJ06JSOZUcA
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I think before I would go messing with my rifle (especially after that group), I would test out my chrony on another gun.
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seriously doubt most chronos have much better tolerance than that despite any claims .. your probably chasing ghosts past 20-30fps numbers is my guess .. if one was really that anal about spread, what likely needs to happen is run a gun under the same conditions using 'several' different chronos and get an average on spread, and still it wouldnt be perfect, just a better look at it ..
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Good input from all and I thank you. I will at least try my chrono again with fresh batteries and try with better conditions at the least. I do remember seeing some very suspect numbers when also chronoing slugs earlier that day (which had been very consistent until yesterday).
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With my .25 Maverick, reducing the ES is ALL about the tune. With the factory tune, the spreads were terrible. The regs were too high for all slugs and pellets. Plus the factory gauge was so small, I wasn't really sure where the regs actually were. A new Wika gauge helped the tuning process immensely.
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Well I had to give it a shot (pun fully intended) tonight to tame it a touch. Left pressure alone as I know that was set at the peak for hammer weight. Worked on spring adjust and it took 3/4 of a turn down to settle in with a high of 965 and a low of 956 over 7 shots. I can live with that and will find out Sunday if it made any real changes to accuracy. It did seem to my ears to have tamed it just a touch and I have a good feeling. With this it is only on PW3, so I have plenty I can do to adjust for these if they really do like hitting 980+, but I also have a ton of room to get the 28.5 and 24.8 NSA slugs dialed in as well. Those 24.8s have been my mainstay for a while now and should not require much at all from there to get into the groups I had them in before (roughly 2" at 100).
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