I started doing some reloading for my .308 recently and I have a question about velocity.
First, I do not (yet) have a chronograph, and I am not super concerned about absolute velocity, except that it is interesting to me.
I am loading 168gr Sierra Game Kings with 43gr or Varget and CCI Primers and Federal brass. This is out of a 20 inch barrel on a Savage PC Model 10.
The data I have says my velocities should be 2600 - 2700fps. So, I plugged this and the bullet data into a ballistics calculator to find my estimated drop so I could move from 100 to 200 yards easily. That was 2.2MOA which is roughly 9 clicks UP for me.
I put in 8 clicks, and was shooting high, dropped down 2 clicks and started hitting pretty close. This is a total of 6 Clicks up or 1.5MOA.
So, when I try to reverse engineer me velocity from my data, and I get 2950fps! I didn't have time for a third datapoint (300 yards) but it seems like this must be right. But it seems very fast for a 168gr out of a 308.
Am I missing something?
First, I do not (yet) have a chronograph, and I am not super concerned about absolute velocity, except that it is interesting to me.
I am loading 168gr Sierra Game Kings with 43gr or Varget and CCI Primers and Federal brass. This is out of a 20 inch barrel on a Savage PC Model 10.
The data I have says my velocities should be 2600 - 2700fps. So, I plugged this and the bullet data into a ballistics calculator to find my estimated drop so I could move from 100 to 200 yards easily. That was 2.2MOA which is roughly 9 clicks UP for me.
I put in 8 clicks, and was shooting high, dropped down 2 clicks and started hitting pretty close. This is a total of 6 Clicks up or 1.5MOA.
So, when I try to reverse engineer me velocity from my data, and I get 2950fps! I didn't have time for a third datapoint (300 yards) but it seems like this must be right. But it seems very fast for a 168gr out of a 308.
Am I missing something?