MosinRob,
A little load education for ya, high and low brass
actually mean little. Mass produced shells usually use High brass shells when loading high FPS mixes, however what you are looking for is repetative patterning, shot size and FPS when judging shells for different bird hunting. If you purchase stock shells, IMO one of the best for Pheasant hunting is the Fiocchi
Golden Pheasant #5 or #6. The 16' gauge shells are fantastic for Pheasant hunting Copper & Nickel plated, 2 3/4 lgth, 1 1/8 oz, @ 1310 FPS that put down pheasants cleanly. If you have a 16 gauge double gun these are about the best Pheasant hunting shells around, IMO the only way to beat them is to make your own. I use these shell in the 2nd BBl and the Fiocchi High Velocity 71/2 @ 1300 FPS in my 1st BBl, a deadly combination for Pheasant hunting.
These shells are tested and shoot repetatively in the same manner holding very good patterns out of most shotguns, another important factor.
Pine Creek/Dave