Ok, just got back from being at the range all day. Im looking for all opinions, suggestions, and if you think Im on to something here. Based on what you see, where do you think my Node is, and if Im at my OCW?
Barrel length is 22"
Caliber 308
Federal 210M Primers
Win once fired brass
Varget Powder
175gr Bullets are Sierra MK
178gr Bullets are Hornady AMAX
For all these tests, I did the "Round Robin" method, and waited approx 1 minute between firing each round. Each shot group is 5 bullets at 100 yards. The Chronograph was set 14' away from the muzzle. On the Chronograph data where you see a "-20" & "-10", that is how many thousandths off the lands the bullets were loaded too. I loaded a total of 20 rounds each with the seating depths "-20" & "-10" for the Sierra 175MK's. To the lands, my Ogive measurement is 2.254. Where you see the "ES" & "AVG" above each target that is the "Extreme Spread" & "Average Velocity" for that given target.
The small circles are 1", the bigger ones are 2".
Here are some pictures of my brass. One thing that is baffling me is the shiny marks on the lip of the case head. When looking at the pictures, the marks will be on the bottom. Out of the 80 or so rounds I fired yesterday about 15 or so had these marks. The marks appeared from the lowest powder charge to the highest.
<span style="color: #3333FF">I DONT KNOW WHY THE BELOW PICS ARE NOT SHOWING UP ON HERE. CLICK ON THE LINK, AND THEY WILL TAKE YOU TO THE PICTURES.</span>[/color]
[url="http://i1211.photobucket.com/albums/cc439/oif2003/1335554491676.jpg"]http://i1211.photobucket.com/albums/cc439/oif2003/1335554491676.jpg[/url]
![url]](http://[url="http://i1211.photobucket.com/albums/cc439/oif2003/1335554489610.jpg"]http://i1211.photobucket.com/albums/cc439/oif2003/1335554489610.jpg[/url])
Barrel length is 22"
Caliber 308
Federal 210M Primers
Win once fired brass
Varget Powder
175gr Bullets are Sierra MK
178gr Bullets are Hornady AMAX
For all these tests, I did the "Round Robin" method, and waited approx 1 minute between firing each round. Each shot group is 5 bullets at 100 yards. The Chronograph was set 14' away from the muzzle. On the Chronograph data where you see a "-20" & "-10", that is how many thousandths off the lands the bullets were loaded too. I loaded a total of 20 rounds each with the seating depths "-20" & "-10" for the Sierra 175MK's. To the lands, my Ogive measurement is 2.254. Where you see the "ES" & "AVG" above each target that is the "Extreme Spread" & "Average Velocity" for that given target.
The small circles are 1", the bigger ones are 2".
Here are some pictures of my brass. One thing that is baffling me is the shiny marks on the lip of the case head. When looking at the pictures, the marks will be on the bottom. Out of the 80 or so rounds I fired yesterday about 15 or so had these marks. The marks appeared from the lowest powder charge to the highest.
<span style="color: #3333FF">I DONT KNOW WHY THE BELOW PICS ARE NOT SHOWING UP ON HERE. CLICK ON THE LINK, AND THEY WILL TAKE YOU TO THE PICTURES.</span>[/color]
[url="http://i1211.photobucket.com/albums/cc439/oif2003/1335554491676.jpg"]http://i1211.photobucket.com/albums/cc439/oif2003/1335554491676.jpg[/url]
