Finally making progress.
Went to the range today.. 3 loads to test
37.5 and 38 grains of N150 over Lapua Scenar 139...
and 38.7 Grains of N150 over a Lapua Scenar 123 (Load is arbitarily derived using Quickload and OBT)
Still shooting off a bipod using my left hand as a rear support. My bench has not arrived yet.
Here are the results...
Pretty furstrating. My 1st group of five with the 123 looked pretty much like the top left group. So for the second group I changed the way I hod the rifle. Instead of crossing my thumb over the stock I aligned it to the axis of the rifle... and voila..
Approximately 0.781 edge to edge
I am pretty happy for now... I do want to try this technique with the 139 loads as well. I suspect I am getting the fliers due to improper technique... or even jerking the trigger.
I did trim all my brass tot he same length, chamfer in and out, clean primer pockets etc...
On another front figured out my puffy primer issue with the 8x60 S as well. The load is indeed too low. Was using Privi brass.. brand new which is much thicker than RWS. And was getting soot to the base of the cartridge...
Went to the range today.. 3 loads to test
37.5 and 38 grains of N150 over Lapua Scenar 139...
and 38.7 Grains of N150 over a Lapua Scenar 123 (Load is arbitarily derived using Quickload and OBT)
Still shooting off a bipod using my left hand as a rear support. My bench has not arrived yet.
Here are the results...
Pretty furstrating. My 1st group of five with the 123 looked pretty much like the top left group. So for the second group I changed the way I hod the rifle. Instead of crossing my thumb over the stock I aligned it to the axis of the rifle... and voila..
Approximately 0.781 edge to edge
I am pretty happy for now... I do want to try this technique with the 139 loads as well. I suspect I am getting the fliers due to improper technique... or even jerking the trigger.
I did trim all my brass tot he same length, chamfer in and out, clean primer pockets etc...
On another front figured out my puffy primer issue with the 8x60 S as well. The load is indeed too low. Was using Privi brass.. brand new which is much thicker than RWS. And was getting soot to the base of the cartridge...