Re: Anyone own a 7mm 300 Win Mag?
Shooting it some more. The tight chamber is slowing it down by increasing pressure at lower charges. I think.
Shot some 180 vlds tonight and it was holding 1/4 moa with 73.5 h1000. And primers are flattening a little. I will check velocity in the next day or so.
I did shoot the 162 Amax with 77 gr of retumbo a couple days ago at 400 yards and three shots were under 3/4 inch. But the six hundred yard group had a vertical flier in it. 7.5 inches higher than two that were within an inch of each other. So, no bueno with the retumbo.
The ogive measurement on the 180 vlds is 2.855 for the chamber. I loaded them .005 off at 2.850.
Read a little on the primer flattening. I don't think my pressures are as high as I was assuming. I am going to try 74.5 to 76 of h1000 with the 180s in the morning.
Last edited by Petersen; 10-17-2012 at 10:58 PM.