Are these temp sensitive?
The N550 I bought 16lb from them last year and no it's been excellent from 30's to 90'sF Temps in both 22BR and 22GT. Stupid accurate too.
This is the MP N550 equivalent I got from them. Stupid accurate and low single digit SD's
I just grabbed some N555 for Creedmoor and x47L
N555 is marketed as one of the most temp insensitive powders out there.... idk we will see