I don't know where you are in your life but when you are looking at tortoises you have time.
Leopards are usually the slowest growing tortoises of the tortoises in general.
I've got one that I hatched out just short of 20 years ago. She is a little under 10 inches SCL.
Leopards can get big but to say there is an average size is out and out wrong. If you are comparing WC imports then you might be able to come up with an average size but the range and the varience of the leopard is so great I really don't think you can call them a large tortoise.
They can be delicate but the worry about dealing with the size is totally unnecessary.
I've been keeping them for well over 30 years and they are my greatest joy and greatest heartbreak.
I've got some notes I have written up that I'll be glad to pass along if you email me directly.
>>Thanks...I have looked a bit into russians but my wife was really interested in the leopards until i told her about the size.
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>>Thanks again for the help, I'll definetly check all those out.
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>>Jason
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Ed @ Tortoise Keepers
Trying to keep the fun in Chelonian care