75 yards. If we all shoot them at the same distance it helps make any comparisons more useful, so I stuck with the range suggested in the title.
[Dialling for elevation: 35yd zero +12.5MOA, Sportsmatch 30mm high mounts, Daystate Mk4, JSB Exacts @ 781fps].
The empties certainly do fly! The furthest, which I managed to find, was 15 paces from its starting point.
I've redrawn the paper target, the cartridge cases have been slightly shortened to replicate a 67mm cartridge. The width remains a fraction slimmer than a fired 12ga, the open office drawing progamme won't allow me to make very small corrections easily, there's less than a mm in it (14ga anyone?)
Download link > SSC pdf target v2
-Print at 100% Actual Size, the line at the bottom should be exactly 20cm to ensure it is scaled correctly
-The two triangles with green centres can be used to check your zero. [The points should also be 4 Mildots apart, you can get a rough calibration by adjusting the mag until 4 MD's balance on the triangles at 75 yards iaw with the threads title.
Have fun and keep us updated with how you get on, the good and the bad!