Aster growing frustrated at poor grouping with my custom .260 and after lots of advice from SD members - (Thanks Mr Dabbler Miligan and other .260 aficionado's)
I loaded up 3 rounds precison perfect, right on the lands and shot them, result - three touching holes at 125 yards!
Can't believe that OAL made such a difference! I was 80thou off with the standard Max. 2.785".
Upped it to the lands and an amazing result.
Loaded three more to try again.