I've a 22" factory sporter .223AI in a mcswirly (compact). Balance is good and scoped it comes in a little less than 8 lbs. A remington sporter contour with a bore for a .223 isn't a "light" contour...considering weight/balance, it's a magnum(+) contour.

...go with a mcswirly on this one and then do the same build with a mt contour and edge next... grin