I did some chronograph testing this morning and got some interesting results.
Rifle: E.R. Shaw mark VII. 22" barrel
powder: allaint power pro 2000mr and Imr 8208.
I was interested in alliant power pro 2000mr powder because of the promise of 2725fps with a 200gr bullet. I also tried IMR 8208 because it looked promising for 180 - 200 gr bullets.
Results:
52gr of power pro 2000mr.
200gr Interlock = 2664 fps avg.
200gr Accubond = 2678 fps avd.

47gr of 8208.
200gr Interlock = 2696 fps avg.
200gr Accubond = 2720 fps avg.

48gr of 8208
185gr TTSX = 2815 fps avg.

49gr of 8208.
180gr Accubond = 2875 fps avg.

Interesting that with the power pro I got lower than listed speed but with the 8208 I got faster than listed speed. Accuracy between the two powders was too close to call. I think I'll stick with 8208 for now.

I also tried power pro in my 308 win.
With 50gr of powder and a 165gr sst I got 2962 fps avg out of a 26" barrel!


Last edited by obie458; 04/07/12.