Greg,
The difference between the "military" and "Tactical" is in the velocity. The military load uses 8 000 pellets if I remember correctly and is loaded up to max dram where the tactical is a reduced recoil load that uses 9 00 pellets. The military type is faster, but for my use I just stick with the reduced recoil tactical loads because they are cheaper and perform well enough. Plus they are easier on the shoulder so your shooting sessions can last longer. Hehe. One thing about the tactical loads is that even though the pellets are traveling slower, they actually penetrate deeper! That's because the high powered loads tend to be so strong that the pellets will deform and thus not penetrate as far. The tactical load doesn't and a round pellet will go farther than a flat one, even at less velocity. This sounds totally FUBAR I know, but this appears to be the case. Regardless, any 00 buck load within shotgun range, be it max dram or tactical, will have devastating on target results. So I am not going to harp over their differences.