can't speak for that one ,but I have same scope in a 8-32 x40. Very happy with it,tracks great and more that clear glass for my old eyes. I use mine out to 1000 yards.
I don't know much about that one either, but I use these on both of my CZ .223's http://www.adorama.com/MUMT852544.html. On my .243 and 6mm, I use the 8-32's. Mueller makes a very nice scope- I'm sure it will work fine for you.
I own five Mueller scopes (four 4.5-14x40 APVs and one 3-10-44 Tac II). All of them have been rock solid in years of shooting. The scopes have had zero problems, track well and have nice glass for their price point.
I'm sure the Mueller scope the OP is looking at will serve him well also.
I have one of them scopes on my CZ.223 lux,i have found it to be very good and it never moves with the recoil from the rifle,i rarely shoot over 200 yards with it,but everything is crystal clear,
I love my Muellers, but those Optics Planet folks... I don't mind avoiding them like the plague. They never tell you if the stuff you are ordering is out of stock, no longer being made, or whatever.