I run a 300 RSAUM.
Loaded 5 dummy rounds of both Nosler and Norma.
The Norma had lumps on the necks.
Wasn't much of a lump but you could measure it with 0-1 mics.
No size difference on the necks of the Nosler brass.
Ran the Nosler brass.
Have 9 to 10 reloads with no problems on the Nosler.


dave


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Only accurate rifles are interesting.