Should be a decent Coyote gun, and should anchor 'Chucks instead of them making their burrows as often happens with a .25 cal and almost always with a .22, it seems.... The range will be determined, as always, by the accuracy.... I don't have a BC on the new JSB .30 cals, but they are basically a scaled up King plus a bit, so the SD and BC should be about 27% higher.... in the 0.043 - 0.045 range.... 88 FPE at the muzzle would end up about 50 FPE at 100 yards, so you're talking decent .25 cal power at the muzzle, but at 100 yards instead.... Sighted at 50 yd. the drop at 100 should be about a foot....
Rather than have either a hollow probe (which loads the pellet by pushing on the base, and the air flows through it).... or a thin extended probe (which loads the pellet by pushing inside the skirt and the air flows around it).... this bolt simply has a flat end.... The key is in the bolt slot.... The bolt pushes on the base of the pellet (or bullet) to load it, and stops with the base or skirt past the barrel port.... It is then withdrawn to clear the barrel port completely, leaving no obstruction to the airflow once in the firing position....