I finally got a chance to shoot the new HM1000x over the weekend. It's tuned to shoot at 19fpe and is set up for hunter field target. The JSB 10.3 pellets seem to be the most accurate. They produce 1/2" groups at 40 yards with no wind, shooting at 900fps. Does this sound about right? I was hoping for closer to 1/4" accuracy at this range.
My TM1000 in .177 shooting JSB 8.44gr at 795fps (just under 12 ft-lbs), will produce just under 1/4" groups at 55 yards. I can't overemphasize the importance of finding the right head size that produces best accuracy in your gun. I did lots of testing with AA, FX, and JSB pellets of different head sizes that I measured with a PelletGage before I found the best combination. I think you haven't found the best pellet yet.
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