Especially with a 12, where you're likely to shoot slightly heavier loads than you would with a smaller bore, I don't think you need much choke at all in a 12 for grouse and quail. I'd say a maximum of .005 in the R barrel. The L, I think, is less important for grouse (where you don't get a lot of 2nd shots) than it is for quail. But I'd suggest .015 (light mod) as a maximum. Maybe as little as .010. I have a 20ga grouse gun that's choked .000/.007. I do shoot a lot more woodcock than grouse, but so far I'm quite pleased with those very open chokes.
Last edited by L. Brown; 08/02/12 09:14 AM.
