Dan_oz,
Granted we are probably talking about which angels dance bestd...
How do you say bluing creates a magnetic field? How would such a field, if it existed, "amplify the Magnetospeed field"?
Assuming the bluing has some small magnetic properties.. The fields of two magnets may reinforce, or partially cancel, depending on polarity orientation, etc.
If it is another force on the projectile than it might act similar to gravity in spindrift..
What force is created? In which direction does it act? Where does the energy come from?
Still talking about possible magnetic, or current here. The direction is probably unknowable w/o serious instrumentation.
Like someone else said an interesting experiment..
Particle accelerators use magnetic fields to steer an...e magnetic steering force...
What you are talking about is effectively a rail gun, or coil gun. You need to pump in considerable amounts of electrical energy to create a strong enough field to make them accelerate projectiles, as well as supplying this energy in a particularly specific way. Where does the energy come from to create a strong enough magnetic field to accelerate projectiles to any noticeable or measurable degree in your blued rifle?