I've used the 2400 load as above with both the Thompson gas checked as well as the plain flat base heavier 358429 SWC.
No worries here.......
Any of y'all remember that of the Norma & ol Super-Vel days of really flattened primers and sticky extraction?
Sometimes primes would fall out and ya would have to jar the ejector rod on the wagon tongue!
Now, those were the Days!
Su Amigo,
Dave