Initially, it was the mystery of How it was actually accomplished. It just hooked me. Secondarily it was its application for hunting and shooting animals, with accuracy and precision, at greater Ranges. Soon a couple of my hunting rifles were wearing Higher Mag scopes, and the concept of Dialing MOA became the norm. The ultimate for me , so far ,was the two trips to the Bang Steel Shooting School, and shooting steel at 1000 and 1100 yards with my 270 Weatherby mag. Now a Browing X Bolt Max Long range in 7 PRC is my next rifle, for Long Range Shooting. It's really just incredible fun, once you understand the math and the science, and you have the correct Rifle/ Load/ Scope Combo. My friends think is magic, and I'm ok to let them think that. LOL!!!