My load of 101 gr of 50 BMG in a 338 RUM is compressed behind the 300 OTM and does cake pretty solid.
However, pressure isn't a problem either immediately loaded and shot or if they set for as much as several months.
With Retumbo in the 375 AM with Kirby's std load of 142 grains and the 350 SMK which has been quite a moderate load considering my nature
, the last time I was in Townsend and not on a very hot day, she blew a primer.
It's no way a compressed load.
I haven't shot her since.
Maybe there's something going on with Retumbo???
We'll see next week.