Don't know how to state this correctly, so here it goes...
I've been working on handloads for 308Win on Scirocco's (165), Interbonds (165's) and SST's (165's).
Yesterday I was doing seating depth testing on the SST's over 44.5gr Varget at 0.01, 0.05 and 0.09 off the lands. All my groups were to the left of center target.
I get on target with Black Hills Match ammo 168grain SMK....this hits literally dead center at 100 yards fouled cold bore shot, almost every time. My son shoots this dead center almost every time. Groups are in the 0.75moa range.
Here's a pic of my target from yesterday:
Other than the fact I can't reload worth a hoot, the groups are all to the left. Best group is 0.78 MOA but it is also about 0.6MOA to the left at 100 yds.
Is this an issue with my sight picture or parallax with me looking through the scope at 10X (Nikon Monarch 2.5-10x)?
Here's a pic of a gong I had set up at 300 yards...same thing...shot is 2.75" to the left of center point of aim...or about 0.9MOA to the left...wind was at 0deg (from behind me) gusting to 10-15mph, but at the time it was still. I only had time for the one shot, but I was relaxed and it was calm...
The shot is also 4.5" low...or 1.5MOA low...I chrono'd the Black Hills 168 Match ammo earlier that morning so I should have been dead nutz on (I was exactly at 300 yards as determined by the Leica) target...Shooter (Android) said 13 clicks up and that's what I dialed. Looks like it needed six more clicks up to be on...but if my groups are 0.75MOA I probably only need 4 up to scatter around center target (is this correct?).
Any feedback or suggestions/comments are welcome.