The Firing Line Forums - View Single Post - Erick Cortina, Precision loading simplified.

Shadow9mm · April 13, 2021, 08:45 PM

So I found his channel on youtube, he is a F-class shooter. His explanation of precision reloading really helped me understand how the reloading components interact. I had always thought of them as separate processes and not linked.

The Basics
Combustion, Low ES/SD. Effected by primer, powder, case capacity variation, neck tension
Harmonics, effected by bullet seating depth and finding the right harmonics node.
external ballistics, consistent bullets.

My new process
Pick bullets that are uniform and consistent.
Get a good load with a LOW es/sd being most important
tune your seating depth to tighten the groups.

I am in the process of re-working a couple loads. but so far this simple process has made a HUGE difference in the quality of my loads, and in my understanding of how to do things.

Precision reloading
https://www.youtube.com/watch?v=6VEMZJYovMA

Don't chase the lands (or harmonics nodes)
https://www.youtube.com/watch?v=oRXlCG9YZbQ

Don't chase the lands pt.2
https://www.youtube.com/watch?v=9FKq8Jj8YEI

I know things can get a lot more complex and there are a LOT more rabbit holes to go down. Hoping this may help some new loaders, or be a refresher for those of you have forgotten more than I will ever know.

April 13, 2021, 08:45 PM	#1
Shadow9mm Senior Member Join Date: March 21, 2012 Location: Indianapolis, IN Posts: 2,257	Erick Cortina, Precision loading simplified. So I found his channel on youtube, he is a F-class shooter. His explanation of precision reloading really helped me understand how the reloading components interact. I had always thought of them as separate processes and not linked. The Basics Combustion, Low ES/SD. Effected by primer, powder, case capacity variation, neck tension Harmonics, effected by bullet seating depth and finding the right harmonics node. external ballistics, consistent bullets. My new process Pick bullets that are uniform and consistent. Get a good load with a LOW es/sd being most important tune your seating depth to tighten the groups. I am in the process of re-working a couple loads. but so far this simple process has made a HUGE difference in the quality of my loads, and in my understanding of how to do things. Precision reloading https://www.youtube.com/watch?v=6VEMZJYovMA Don't chase the lands (or harmonics nodes) https://www.youtube.com/watch?v=oRXlCG9YZbQ Don't chase the lands pt.2 https://www.youtube.com/watch?v=9FKq8Jj8YEI I know things can get a lot more complex and there are a LOT more rabbit holes to go down. Hoping this may help some new loaders, or be a refresher for those of you have forgotten more than I will ever know. __________________ I don't believe in "range fodder" that is why I reload. Last edited by Shadow9mm; April 13, 2021 at 10:10 PM.