I have a question about compressed loads. I have never loaded any compressed loads, but I am trying some Retumbo powder in my 300 win mag with some Berger 190 and 210 VLD's. The data provided by Berger shows a max of 82.9 grains at 108% of case capacity for the 190 grain loaded to a COAL of 3.340 with a velocity of 2998fps. These bullets will be seated to a COAL of 3.558 in my rifle for the 190 grain bullet. How will the increased case capacity due to my longer COAL affect pressure and therefore velocity? Logically it would seem that the velocity may be a bit lower, but like I said, I have never run into this situation before.