Hi Guys,
Question here. I am wondering about OCW tests conducted using different seating depths of a projectile.
Let's say I want to do an OCW test, so I load up my rounds and set the ogive to base length to a certain distance (we'll call it X) using my micrometer die. Then I go shooting and find an optimum charge.
Now let's say I go home and remake all the same charges, but change the seating depth of the bullets to a different length (we'll call it Y) using the micrometer die.
Is it likely that I will find the tightest group again occurs at the same powder charge, or could the two different seating depths effect where the rifle finds a nice harmonic node?
The way I have done this in the past is to pick a seating depth and stick to it for all the rounds in the OCW. Then once I find the best charge, I experiment with seating depth. I am wondering if I could pick a charge near the top of the velocity range and then tune the seating depth to tighten the group. I am sure the group size might vary, but is it possible to bring the rifle into a harmonic node based on seating depth alone?
M1Amen
Question here. I am wondering about OCW tests conducted using different seating depths of a projectile.
Let's say I want to do an OCW test, so I load up my rounds and set the ogive to base length to a certain distance (we'll call it X) using my micrometer die. Then I go shooting and find an optimum charge.
Now let's say I go home and remake all the same charges, but change the seating depth of the bullets to a different length (we'll call it Y) using the micrometer die.
Is it likely that I will find the tightest group again occurs at the same powder charge, or could the two different seating depths effect where the rifle finds a nice harmonic node?
The way I have done this in the past is to pick a seating depth and stick to it for all the rounds in the OCW. Then once I find the best charge, I experiment with seating depth. I am wondering if I could pick a charge near the top of the velocity range and then tune the seating depth to tighten the group. I am sure the group size might vary, but is it possible to bring the rifle into a harmonic node based on seating depth alone?
M1Amen