Correct. Assuming that the information is correct, if it goes 1.4 miles with a muzzle elevation of 45 degrees, it should travel even farther with a muzzle elevation of 30-35 degrees.If a bullet traveled 1.4 miles when launched at 45 deg, that is not its maximum range except in a vacuum. Maximum range in atmosphere is at 30-35 deg elevation.
Your statement is also poorly phrased, but I think we know what you mean.James K said:"... a 9 mm 120 grain bullet fired out of an average sized handgun at 45 degrees elevation will travel about 2300 meters before falling."
Poorly phrased. The bullet begins to fall the instance it leaves the barrel and will continue to fall until it is stopped by the ground or some other object. Whether the bullet hits that object directly below the muzzle or at some distant point is irrelevant to its fall or fall rate.