Can agree 100%, anyone can watch a keyhole but being able to move faster and knowing how to deal with edge cases better will give you a better chance of seeing your goals achieved. I know people are going to bring up airsoft as a suggestion for beyond the range training, and it sure is nice to have a "real steel" weight airsoft gun. We all know about the painful circumferential advocates and it is in no way a substitute for proper unknown distance training but if you use it as a compliment to proper training regs it beats a blue gun in my opinion.

You should check out Matt pranka from xray alpha he talks about some of these concepts