Picked up some 168gr amax for my .300 win mag as I had to wait for my normal 190gr SMKs to get here, seems they are in short supply.
At 100yds:
My fist load was light with unfired brass at 2,754fps using 75gr H1000 but they grouped ok at .32moa for a 4 shot group after the first cleaner that was off about an inch right. So I was optimistic.
The next several groups had vertical stringing from an inch to 1.35" using 78gr and fps were chrono'd at 2,930fps with many dup'd consecutive shots. Standard deviations per group were all acceptable and some shots were near same hole so I don't think the stringing was due to velocity, directly at least. One group in particular had a Std deviation of 13 yet the vertical string was the mentioned 1.35".
So assuming the loads as ok, what shooting defect as in my technique would cause the stringing? I haven't noticed this with other loads, I did have a diagonal string problem a while back that I thought was related to shoulder placement but haven't seen this one to date.
I shoot off a bipod on a bench. No brake, the gun kicks pretty hard but I have over 1000 rounds thru it in three months so I am used to it. Sort of like the abuse I take from the wife and kids...
At 100yds:
My fist load was light with unfired brass at 2,754fps using 75gr H1000 but they grouped ok at .32moa for a 4 shot group after the first cleaner that was off about an inch right. So I was optimistic.
The next several groups had vertical stringing from an inch to 1.35" using 78gr and fps were chrono'd at 2,930fps with many dup'd consecutive shots. Standard deviations per group were all acceptable and some shots were near same hole so I don't think the stringing was due to velocity, directly at least. One group in particular had a Std deviation of 13 yet the vertical string was the mentioned 1.35".
So assuming the loads as ok, what shooting defect as in my technique would cause the stringing? I haven't noticed this with other loads, I did have a diagonal string problem a while back that I thought was related to shoulder placement but haven't seen this one to date.
I shoot off a bipod on a bench. No brake, the gun kicks pretty hard but I have over 1000 rounds thru it in three months so I am used to it. Sort of like the abuse I take from the wife and kids...
