The only way to know if a load is accurate in your rifle is to take the bullets, a couple different powders, and start experimenting within the limits of the reloading manuals. It is impossible to say if one load that is accurate in gun A will even be close to accurate in guns B or C. I would find 3 powders that give the velocities you want, load some up and then pick the most accurate powder, then work slightly with the load to get to where you want to be accuracy wise.