No issue, I took it with a grain of salt. There is more going on inside a cartridge than just propellant burning. So I considered Berger's comments as loading beyond the maximimum proven load and candidly, I don't want to experiment even though modern receivers have vent holes for such 'experiments' on each side, it would still ruin the firearm.
If I had an old clunker, I might mount it in a Lead sled and use a string to pull the trigger to see what occured but thats about it for me. No old clunkers here, except me.
There is more discourse along with the powder versus jump theory about SAMMI specs and COAL, some of which I can accept, some of which I prefer not to.
I typically jump bullets but I've never increased the load past the loads listed in the respective bullet manufacturers books for the bullet I'm using. Again, I don't load Berger's, except maybe on the grill....oooops, thats burger, not berger...