Has anybody used one of these?
https://tier-one-usa.com/collections/optic-levellers-1/products/scopeset-scope-levelling-kit
https://tier-one-usa.com/collections/optic-levellers-1/products/scopeset-scope-levelling-kit
Waste of money ... want level, shoot and fine tune so when Shot level .. pellets fall in line vertically 10 & 50 yards ... get an even pellet fall from gravity your level.
Any method that references against the receiver or scope body is unconcerned with the only relationship that matters, which is that the reticle is oriented to the bore.
It depends? We assume the gun is good enough to have the bore dead centered in the action.