David,
I have a 6XC with your first generation brass. I am using 38grs of H-4350 with the bare Sierra 107s. This is the load the gun seems to like but the problem is about a 1/4 of my brass will show pressure with an ejector mark on the case head. I am "NOT" getting stiff extraction with these cases.
The other problem I am having is when shooting over a cronograph I will get three in a row with one to three feet in variation then get one that will jump 30 to 50ft per sec.
I am also getting some really great groups at 600yds the some unexplained bad groups. Do you have any thoughts on this?? All the brass weighed the same and I cleaned the necks with a light neck turn taking about 3/4s of the neck. Thanks!!!
I have a 6XC with your first generation brass. I am using 38grs of H-4350 with the bare Sierra 107s. This is the load the gun seems to like but the problem is about a 1/4 of my brass will show pressure with an ejector mark on the case head. I am "NOT" getting stiff extraction with these cases.
The other problem I am having is when shooting over a cronograph I will get three in a row with one to three feet in variation then get one that will jump 30 to 50ft per sec.
I am also getting some really great groups at 600yds the some unexplained bad groups. Do you have any thoughts on this?? All the brass weighed the same and I cleaned the necks with a light neck turn taking about 3/4s of the neck. Thanks!!!