Went to range today to test some groups in my 33 nosler with h1000 and r16 running right around 2,800fps. Was getting less than expected accuracy as I shot just to realized the actions screws had loosened. They were torqued down, this time they are getting some lock tight added.
This is only usable info I did get of labradar:
Temp 75 deg. / humid
The h1000 78.5 grain:
2767 fps
2774 fps
2777 fps
2766 fps
2748 fps
2787 fps
2736 fps
2787 fps
All were loaded to 78.50 to 78.48 grains
So wasn't a difference in charge weight.
So will only be trying R16 70.5 gr. Load for groups next range trip.
Don't know if this helps but just adding as much data as possible.