Of course location is vital. There are plenty of external factors that play into your success or lack of when hunting bucks. Pressure, buck:doe ratios, tresspassers even, around my part of the world its packs of hounds running deer. Plenty of external factors indeed.

But, folks who are consistantly successful know how to play things to their strengths. You can keep the pressure on deer down by limiting foot/vehical traffic on your hunting area. You can take does, and let immature bucks walk to even out buck:doe ratios. You can supplemental feed to help deer reach their potential. But somethings you just can't help.

Example; you have a much better chance at a 200" deer if you live in the midwest than you do if you live in Florida. Unless of course, you live in Fla, and travel to the midwest. That said, location does matter. You can't catch a marlin in a farm pond, you gotta run out to where they are.

But, a mature buck is still a mature buck. No matter how much bone he wears, a 6 yo is a 6yo, and he is going to be a challenge for you no matter what. If you do all of the above things to help swing the odds, then your chance just get better.