Originally Posted by mitigator
The anston site suggests 112 mm but the app it reccomends says 103mm.
I know most targets are non standard but it's worth a pop.
I'll go with 110 unless someone has a definitive answer
The app uses 110mm as standard for Nockover targets and 103mm for Gamo targets, but as a few people have said there is some variation.
It doesn't really matter to be honest - anything from 105 - 115 for Nockover will be fine.