What your seeing could be from the powder starting to be compressed, that can plateau pressure levels. With H4831 the fill ratio is well over 100%.
Here is a thread that includes a quickload simulation of the load you are looking for.
Nosler Reloading Forum • View topic - .270 Win w/150 ABLR QL Request
Here is a thread that includes a quickload simulation of the load you are looking for.
Nosler Reloading Forum • View topic - .270 Win w/150 ABLR QL Request
