I am in no way an expert, but have been reloading long enough for a variety of calibres to have a feel for what is sensible and what isn't.
I'm getting around 3600fps from a 20gn bullet, which I think realistic for this cartridge. The state of the cases seem good and are going strong on their fifth load and look fit for many more. In my experience I feel quite safe as I know I didn't blow myself or the rifle to bits a whole grain higher. Nevertheless, I shall delete my load data in case others don't have same consistent good fortune that I have been lucky enough to enjoy.