Hello from Georgia,
I recently bought one of the Mueller scopes from the factory at the introductory price of $189. After a simple mounting and bore sighting I took it to my 500 yard range behind my house. I shot a few shots at 50 yards to bring the grouping in. Then it was shot at the standard 100 yards and within 8 shots it was grouping a respectable 1.25" group. I let the barrell cool completely for over an hour and fired a 3 shot group at 100 yards. This time the group was almost identical. I then decided to go for it !! I have an 8" steel plate set at the 500 yard mark and the mil dots were screaming to be used.
Do keep in mind that this was the first time that the rifle or scope had ever been to the range. After a bit of calculation, I chose to use the second dot down as the aim point and sent a round downrange. My spotter confirmed a miss just high, so I put the dot at the bottom of the plate and gently squeezed one off. What a rewarding sound that steel plate makes !!
I decided to get a second opinion from my spotter who is an excellent rifle shot. He aimed at the same point with the second dot down and rang the bell as well. This confirms that the 308 Ultra Hunter topped with a fine Mueller scope is indeed one accurate package.
Good Luck,
Dave