Can't speak to the BAR or the 7400, but the Win 100 is a POS. (Oh, I won't sell mine. I enjoy shooting it. But it's a POS.)
Hold your rifle in your hands and imagine running flat out with it in the rain with a heavy pack through muddy underbrush, then diving flat and catching yourself and your pack before impact with the butt of your rifle shoved into the mud.
If you think it could stand something like that, repeatedly, and still be relied upon not to jam when you suddenly need three or four quick shots to save your life, then maybe the rifle you're talking about has utility as a battle rifle.
Win 100? Uh, no.
Any rifle with separate wooden buttstock and forestock? Uh, no.
An AR-15 festooned with lasers and rangefinders and flashlights and scopes and GPS receivers and Internet data links? Uh, no.
Gimme my trusty M-14, with iron aperture sights, and I'll be happy.
