I'm looking to mount a tubular red dot scope on a Ruger Mark III that will be used for indoor bullseye competition. If I'm going to buy something new it will likely be an Ultradot but I found an old used Aimpoint 3000 for $50 locally. Its 4MOA dot. Is this worth messing around with to save a few bucks or should I just get an Ultradot and be done with it?
http://www.aimpoint.com/o.o.i.s?id=46&prev_id=46&product_id=85
http://www.aimpoint.com/o.o.i.s?id=46&prev_id=46&product_id=85