I know it’s an old thread, but since your testing seating depth first, what powder charge are you using while doing the seating depth test? I’m trying to get a game plan together using the least amount of rounds possible for a new rifle with limited amount of components.The load development in Cortina's thread is essentially an OCW test.
Testing initially at 100 yds will virtually eliminate wind influence so you get a good read on grouping. I use the OCW at 100 yds for initial evaluation. You are not looking for the tightest group, but for a set of groups that share the same/nearly the same center of impact. Next I will go to the longest range I have available (300 yds for me at this time) to prove the load. Assuming all is still good, then I will evaluate at longer range as soon as possible. This might mean that I evaluate the load in an F-Class 600 yd match.
I test for seating depth first using the Berger method. I then test for powder charge using the OCW method. Once I have decided on the final load, I will test for seating depth at smaller increments.
I just got a new rifle myself and am going to range tomorrow to test . I like testing at 100 yards because of conditions and the nut behind the trigger . I’m actually using the starting load which I have seen be accurate in 3 other rifles . I’m going to start at about .01 jam and work my way in . I know everyone says shoot farther out , but with a light bullet wind can cause a mess at 300 yards and then you don’t know if it was wind or you .I know it’s an old thread, but since your testing seating depth first, what powder charge are you using while doing the seating depth test? I’m trying to get a game plan together using the least amount of rounds possible for a new rifle with limited amount of components.
Maybe tell us a few more details?I know it’s an old thread, but since your testing seating depth first, what powder charge are you using while doing the seating depth test? I’m trying to get a game plan together using the least amount of rounds possible for a new rifle with limited amount of components.