I have not read all the posts, but will add my limited experience.
I have an 03a3, with a 24 inch Douglas barrel 1/10. The load I used was the 100 grain partition, pushed by 3100 powder. I couldn't tell you how fast they were going, the end results were the same DRT.
I also loaded some v-max of 75 grains, they were my varmint load.
