Thanks for your reply TenMeterPeter, good stuff, very valuable.

Hi Peeps, I'm new on here, I am waiting for a secondhand S400 MPR Precision to be delivered next week. I will be using it mainly for Supported Shooting at 10m. It has a Butt Hook and an Anschutz rear dioptre sight with Adjustable Iris. Can anyone advise on any alterations and checks to enhance accur...