Re: Berger 210 Hunting VLD 300 WM
In WW or RP brass use a CCi 250 or a Fed215GM primer and 74 gr of H-1000 working up toward 77 gr watching for pressure. Seat them .020" off the lands till the sweet spot in the charge is found and then work with seating depth to fine tune.
With RWS brass reduce the charge by 3 or 4 grains to start. This is due to the lower case volume of the RWS brass. The lower case area will cause pressure to show at a lower charge, but max velocity will be close in all bras mfg's.
Also be aware that the newer lot of H-1000 is running about 3 gr hotter that older lots. So as always start low and work up.
This is a great combination and we have used it for long range hunting for years. Taken many elk, deer and antelope with it out to 1000 yds.