Back in 2017 when I started reloading 300 BO rounds I was using the Hornady 9th edition manual. Have not shot over 100 rounds of 300 BO since I got my rifle but loaded over 250 additional rounds.
I getting a piston length barrel for the new build and started reload some more with a bunch of different bullets. Now I am using the Hornady 10th edition manual.
Looked at my reloading data (Excel spreadsheet) and noticed that everything that I loaded a couple years ago was well over the OAL in the 10th edition (same bullets) so I resized all the old bullets. While sitting at my desk the 9th edition was behind me and looked at the OAL. They were 2.215" and .100" longer than the new one.
Interesting how that changed.
I getting a piston length barrel for the new build and started reload some more with a bunch of different bullets. Now I am using the Hornady 10th edition manual.
Looked at my reloading data (Excel spreadsheet) and noticed that everything that I loaded a couple years ago was well over the OAL in the 10th edition (same bullets) so I resized all the old bullets. While sitting at my desk the 9th edition was behind me and looked at the OAL. They were 2.215" and .100" longer than the new one.
Interesting how that changed.
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