Not sure if this is normal, or if I'm doing something wrong.
So goal was a case overall length (COAL) of 2.830. So went through the trial and error process adjusting seating depth to get to that length, then ran 2 or 3 more and they were all the same.
Then comes #4........and COAL is now 2.822. Then a few more and one might now be 2.838. The average remains 2.830, but with variations as much as +/- 0.008.
Lee press, which does not cam over. Ram runs up to make contact with bottom of the die........which is a positive stop that never changes.
Only source of variation I can think of is the bullet itself, which in this case was a Hornady Interlock, which do not all measure the same. Since these are exposed lead tips, they don't all look or measure the same.
My concern is correlation of COAL to accuracy. But as long as seating depth is the same.....perhaps any variation in the tip finish doesn't matter? Assume they will all behave the same regardless of the minor variation in COAL?
This sound right or am I missing something?
So goal was a case overall length (COAL) of 2.830. So went through the trial and error process adjusting seating depth to get to that length, then ran 2 or 3 more and they were all the same.
Then comes #4........and COAL is now 2.822. Then a few more and one might now be 2.838. The average remains 2.830, but with variations as much as +/- 0.008.
Lee press, which does not cam over. Ram runs up to make contact with bottom of the die........which is a positive stop that never changes.
Only source of variation I can think of is the bullet itself, which in this case was a Hornady Interlock, which do not all measure the same. Since these are exposed lead tips, they don't all look or measure the same.
My concern is correlation of COAL to accuracy. But as long as seating depth is the same.....perhaps any variation in the tip finish doesn't matter? Assume they will all behave the same regardless of the minor variation in COAL?
This sound right or am I missing something?