Seat depth's impact on MV.

longshot338

So yesterday I went out and did some more load testing on my 338LM. I was adjusting the seating depth to to try and shrink my groups a little more and also shooting over the chronograph and noticed the seating depth had a big impact on MV.

Here are my results

Air Temp 54°
Baro 29.55
Ammo temp 68°

.020 off lands
72 degrees
2769 fps
2767 fps
2765 fps

.030 off lands
2773 fps
2770 fps
2781 fps

.040 off lands
2803 fps
2799 fps
2792 fps

Didn't think it would make 30fps difference wit only .020 difference in seating depth. Interesting side effect of seating depth.