Calm wind this morning with jsb lites out to 100 yds. Spinners @ 35, 45, 60, 70 and 85 yds. Golf balls @ 100. . These little guys launched @ 1000 fps shoot like a Lazer. Tuning up for cold weather and starlings.
I have all of mine programmed to Strelok pro on my cell phone. What pellet, speed, fill pressure ect. Prior to Strelok pro i used a football cheat sheet wrist band.
Try testing other pellets. Also consider a batch that has been weighed and sorted by head size. Has barrel been cleaned lately and especially the tge chrony pick-up? Hope u get it solved soon.