What type of rifle (AR-10, bolt, etc) and engagement distance? 4-16X is a lot of magnification for most LEO scenarios. There are much better reticles than the BDC-800. It is overly busy, yet has no windage hold-offs.
If you plan to train often with this rifle, then you can go more complicated. If this rifle spends all of its time in the trunk waiting for the SHTF, then a recommend you keep it simple. Either way get something you can bet your life on.