Interpeting Magnetospeed Data
So i got my magnetospeed V2 in yesterday and went out this evening to see what the velocity out of my .308 win was.
This is that data I gathered from 15 shots.
Series, 1, Shots:,15
Min,2790, Max,2863
Avg,2829 ,SD, 19
ES , 73
Series,Shot,Speed
1, 1, 2815, ft/sec
1, 2, 2828, ft/sec
1, 3, 2813, ft/sec
1, 4, 2824, ft/sec
1, 5, 2810, ft/sec
1, 6, 2790, ft/sec
1, 7, 2818, ft/sec
1, 8, 2824, ft/sec
1, 9, 2847, ft/sec
1,10, 2845, ft/sec
1,11, 2849, ft/sec
1,12, 2863, ft/sec
1,13, 2837, ft/sec
1,14, 2847, ft/sec
1,15, 2837, ft/sec
First off, I am seeing some what seems to me, pretty high velocity here, I would like some input on how confident I should be in these numbers.
Also this seems to tell me that my load is complete crap and i need to do some drastic work on getting my ES down.
These numbers were shot out of a .308 win, lapua brass, 175 smk, wlr primer, 44g IMR4064, 10 thou off lands with a 30 inch barrel. I was hoping to get close to 2800 fps with this gun and 175's but my god, according to the magnetospeed I hit 2863 fps on one shot. And the velocity seemed to increase to the shy side of the mid 2800's after the first 5 or 6 shots. And I had one round at 2790 fps? Should i throw out the outliers?
This rifle has only had 115 shots fired total out of it, is it possible I just experienced some barrel speed up? Are these numbers normal? This rifle shoots sub 1/2 moa consistently at 100, and the few groups I have shot out to almost 600 yards did not exhibit much vertical at all 2 to 3 inches of vertical normally out at 600. Certainly not what i would expect with a 70 something ES. Can anyone tell me what kind of vertical they would expect out of that much ES at 600? Did i just get a few lucky groups?
Thoughts?
__________________
<P></P>
Last edited by Bishop; 02222014 at 11:33 PM.
