30mm vs. 1in tubes?

[KU_CDT]

I am looking atLeopold VXIII 6.5-20x40 scope for prairie dog huntingand I can't decide which recital to get. I am torn between the target dot (which I really like) and the thin duplex. The target dot has a 1in tube with tall towers and the duplex recital has a 30mm tube with shorter towers.Also theAO on the duplex scopeis side adjustable where theon target dot it isup front.They are both the same VXIII, power and everything, I am just not sure what these little differencesare actually good for. Can someone help?

[trailer]

I have the Leupold Euro 3-9 x 50 mm with the 30 mm tube and I know that the internal part are the same as the 1"� tube. The Euro was designed for the European market but I"™m not sure on the VXIII models would have the same construction. You could always contact Leupold to verify this if no one knows...

[Ridge Runner]

the main attraction to 30mm tubes is there is much more elevation adjustment in the larger tubes. unless you wanna shoot a very long ways 800 yds and more, the 1" tube will do fine. the 30 mm tubed loopys are designated LR/T for long range and target, and the side focus for adjusting from the bench.
RR

[okcmco]

Ridgerunner is correct. The main attraction for 30 mm tubes is more adjustment leeway for windage and elevation. I think standard 1" tubes have somewhere around 60 or 70 inches and some 30 mm tubes have as much as 100"
As far as the reticles, I don't even know what a tower is.
Maybe PAbowhunter knows.