Originally Posted by
darkker
Sorry was early, think I was looking at 204's...
900ft elevation. 80°. 30%RH. 20mph wind at 90°
Shooting to 300 yards.
175 SMK @ 2557fps
0.6 mils drift
155 TMK @ 2850fps
1.0 Mil drift
As a bit of a side note, we hooked up the Pressure Trace and tested a mountain of things in the Creed. I had a suspicion about the operating pressure "range" in the Creed data. So we tested several powders and bullets against that theory. It fit quite nicely. What we found was that for every 75-100fps you gain, comes at the cost of 10-15,000 psi. So those who tell you they get 2900+ out of the 140's.... Well, easy to see roughly where their pressures are, and why they only get a few loads before primer pockets get loose.
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