What you need to know is those two brands of brass hold different water capacities. So, it's likely you will get two different velocities from the same load recipe. I load the 6.5x55 Swede using Lapua brass. I also have some Norma brass (only about 20 pcs) and the Norma is relegated to my older Swede Mauser.
Load 'em up and if you have a chronograph, test the velocities. They may be similar\same....but you won't know until you test 'em.