Retirement gift coming up in the next 4-6 weeks, It's a want thing more than a need thing. Is it realistic to push a .22 mid 20 grain slug out of a Uragan2 in the mid 900's with a 600mm barrel or is a 700mm barrel required? Aesthetically I prefer the 600mm barrel. Pictures of a 600mm and a 700mm gun next to each other might help sway.