I couldnt seem to get a meaningful load of RL19 into the Norma 7-08 cases without going to compressed loads , which I am not keen on doing. So made up some from the Nosler book 5, using H414, from 44 - 46.5 Gns under 140 Accubond, with Fed GM210 primers.
All loads grouped under 1" , velocity from 2630 up to 2857 fps. The best load was the last one at just under .4" group at 100 metres. All bullets were seated .025" off the lands as a guesstimate for powder trial stage of load development,
The next attempt was with RL15, again at .025 off the lands, This gave much better results, with the following:
RL15 40.5 or 41.0 Gns Fed GM210M primers, Norma brass. Nosler 140Gn BT.
I tried the loads in the Nosler 5 book for this powder, got the best results as above at 2750 fps out of a 22" barrel at 25 thou off the lands. I have now tried it at 10, 20, 30, 40 thou off the lands and best results , under .3 MOA is the 30 thou stand off. This shoots to the same point of aim and equivalent grouping with 140 Gn NBT or 140 Gn Accubonds. So I shall stick with BT for deer, and have some Accubonds loaded in case 'Pigs" appear on the menu.
The RL 15 load is gentler than H414 IMO, with no signs of pressure in my rifle, very sweet to shoot ! Oh... and its a SAMMI standard chamber, no special throating.
Usual reminder to work up loads in your particular rifle , as they all differ.
Best
Peter