Mike,
Just a short note on your question. I have known Ashley Emerson (the driving force behind Ashley Sights) since the time he worked with MMC sight company. The guy is the closest thing to a mechanical genius that I have come across in some time and is a very avid hunter/shooter. He believes that mechanical objects should be bull strong and fool proof and that covers everything from cars to guns to accessories for guns. Everyone that has tried his sights love 'em, including my brother who could tear up an anvil with a feather. I strongly recommend them and I recommend Ashley Emerson to anyone that wants a lively converation with very strong opinions on most any subject. If you do visit with him, tell him the skinny little highway patrolman still says that a .300 Weatherby is a little too strong for jack rabbits.
Take care and God bless,
Paladin