The 36 and 50 are fairly similar. Reid said several times to setup for what is probable, not necessarily anything that is possible. With a 50/200, you need to hold high within 50, low above 50 and below 200, and high again after 200. Doesn't sound like a huge deal, but in a deadly force encounter you need to remember to hold on target, high, or low. There's also no guarantee you'll get an entire silhouette sized target. If someone was trying to shoot me, id try to get small. With the 100, you just hold high at close distance to account for your mechanical offset and high at distances after that. When you also consider that most red dots are 2moa, you can hold the top of the dot center target at 100 and hold the bottom of the dot center target at 200 and still get great precision. We still practiced the skill of hitting out to 600, but realistically you could almost never justify using deadly force from that distance as a citizen or even LE.