Adjusting for case volume

[Unclenick]

Just watch the starting pressure in the powder window. As it explains, you raise that to compensate for jamming a bullet into the lands. It is also raised for copper solids and reduced for moly-coating or other friction-proofed bullets.

[NWPilgrim]

Originally Posted by Marco Califo

308/7.62 as discussed here is the cartridge with the most variation between brands and military brass. That is enough to worry about.

Rather than adjust for different volumes, I would try for consistent brass. 500 prepped LC (sized, trimmed, crimp removed, like years) from Top Brass is $115 @ Midsouth.

This is pretty much my approach as well. I use only LC brass for target loads in both .223 and .30-06. I will use under max loads and mixed brass for plinking where it doesn’t really matter if it is 1.5” or 3”. If I end up with a large lot of one commercial brand like R-P or FC then I will dedicate it for a specific bullet weight. But in general, buying 1,000 ct lots of LC brass provides a lot of rounds that are very consistent.