Vent Rib on big bore rifle

[Nomsag]

Anyone ever seen a vent rib installed on a big bore?

 

[sureshot375]

I don't think you see many ribs on rifles since the sights keep your head up a bit. Maybe like a quarter rib to mount sights/optics. I don't think I have ever seen a vented rib on a rifle, but I am decidedly not an expert outside of modern rifles.

 

[Nomsag]

They have them on the old Remington 600, but those are not big bores. Plus I was thinking about a bead site, like on a shotgun