New TSS
alright, 300 pellets through my new TSS..ran it over chrony..here’s what i got–947-713-865-860-966-1063-743-625-762-748-948-1077-857-951..(15 shots) .that’s with Crosman 14.3 HP, 2900 psi and pW on 6.13 top hat is at factory setting.105 wazzup with ALL that deviation, what do I need to do???
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Try difference pellets, maybe your gun does not like the Crosman pellets.
Try the JBS 18.1 grain.