Thread: Return to Zero

I suspect it’s just some backlash like others have said. Being an engineer in a former life I soon learn to approach all machine operations on a lathe or mill from the same direction i.e. left to right to minimise this error.

So what does this mean for your scope?

Well if I had to dial in 8.25MOA for say a 525y shot, I'd quickly wind my dial up past 9.0MOA and then slowly click it back down to it reads 8.25MOA.

When you've taken the shot you can simply wind straight down to zero as you're ''coming down'' in the same direction of travel i.e. never wind down to -1.0MOA and then up to 0.0MOA or you induce the error. The reason why you alway ''come down'' to set you dials is that the errector spring is on the oposite side to the dial, so it responds better when turned that way and is being set against a compressive force.

All mechanical devices have backlash, just some are better than others...but it’s still there.

kj