Load development after firing new brass.

4844

Private
Minuteman
Apr 7, 2019
38
6
I have worked up a good load for my rifle, low SD's and sub moa groups. So, after forming these cases in my rifle, I cleaned, annealed, trimmed and resized. My question,is it typical to stay with the same load, or add or subtract a few tenths now that the brass has changed? My load is 41.8 grains H4350, 147 ELD, F210 primers. Yes, I am going to rework the load slightly, I just wanted in put from the seasoned re-loaders who have gone down this road before and if there was a slight change. Thanks for taking the time.
 
I have worked up a good load for my rifle, low SD's and sub moa groups. So, after forming these cases in my rifle, I cleaned, annealed, trimmed and resized. My question,is it typical to stay with the same load, or add or subtract a few tenths now that the brass has changed? My load is 41.8 grains H4350, 147 ELD, F210 primers. Yes, I am going to rework the load slightly, I just wanted in put from the seasoned re-loaders who have gone down this road before and if there was a slight change. Thanks for taking the time.

I think a lot depends on how large your accuracy node is and what conditions one is shooting in. I'm more apt to make some changes in the seating depth for adjustments than changing the charge.
 
  • Like
Reactions: 4844
It’ll be within a few tenths +/- but you’re going to have to look for it, no magic rule.
898383F9-4C73-4072-A4D1-2E61131F6E61.gif
 
  • Like
Reactions: Nimothy and 4844
You’ll need to tweak it (sometimes it ends up the same).

This is why for virgin brass I either load a known mild load or the last load I had for the rifle. Shoot a club match or practice. Then do load work on fired brass.

You’ll have to go through the motions regardless, so I don’t worry with it on virgin brass only to go through the motions again.