Gentlemen,

has any of these sights caused the regulation to be off. Assuming your DR was regulated to open sights, OR a scope in the first place?

When at Heym, I was interested in having ALL THREE, ie express sights, scope and a dot sight. All may regulate differently I was told. Just for info - not to go off topic - So in practice, I would have had the rifle regulated for the scope primarily (.375 Flanged), then open sights a good compromise to 50 m (ie for 0 to 50 m they would work well enough, crossing before 50 m if regulated for a scope say to 100 m). The dot sight, I would have just hoped was similar to the open sights, but was told it is different yet again. I could not go ahead with this planned rifle due to changed economic circumstances.

So just for info, interested to see if changing from open sights to a dot sight has affected regulation in a noticeable way? Thanks.