Reynolds...assuming you keep a steady speed of 150mph indicated, your ground speed increases the higher you go, as well as range, to a point. Many things happen differently at different altitudes.
Again, if you have a gunner, so what, you can still kill people and get credit for it.
If you see me online, I can teach you all the little things about bombing.
I fly the B17 primarily, but also fly the:
B24
Ki67
Lancaster
I'm only telling you this because you seem to be assuming many things that are wrong and I'm trying to just help you out. Please trust me on this and see for yourself while flying. I mainly just want to prevent you from spreading wrong information to your pilots in your squad or even just other players in this game.
Also, max cruise is a fine setting during leveled flight, but normal settings can be better in certain ways. There are pros and cons when reducing rpms. The higher your rpms, the faster your speed stablizes.