Agree. The feed lips on these are not set for a 338 Lapua. These are for the narrower standard magnums. 7 Remington Mag, and the 338 Winchester Mag are the rounds I've used these with. The TRG-S action is a 338 Lapua length action so there is plenty of room in these mags to run VLDs long. I've run 180 Berger's in a 7RM and 250 Bergers in a 338WM. But as I mentioned the feed lips are not for the 338 Lapua diameter cartridges, they are set for the standard magnum diameter rounds. You might be able to tweak them to run the larger diameter rounds, but that is not where they are set now.