the effect of the flat fire approximation is that it simplifies the math.

That is why Pejsa is able to give formula's.

Formula's can speed up the computation quite a lot - and could be programmed in the computers of the early sixties

BfX, due to the flat fire formula's can be used to 15 degrees.

Due to progress in computing, however, PM can be done at an instant, compared to the early sixties

In priciple I can switch BfX to point mass as I already have the technology to do that.

yet I do not want to support applications that go beyond 15 degrees - these have nothing to do with target shooting

That is why Pejsa is able to give formula's.

Formula's can speed up the computation quite a lot - and could be programmed in the computers of the early sixties

BfX, due to the flat fire formula's can be used to 15 degrees.

Due to progress in computing, however, PM can be done at an instant, compared to the early sixties

In priciple I can switch BfX to point mass as I already have the technology to do that.

yet I do not want to support applications that go beyond 15 degrees - these have nothing to do with target shooting