The folks at 16ga.com will tell you just about any 2 3/4 inch load for a 16 can be reworked by cutting off the fold crimp and roll crimping into a 2 1/2 inch load with no appreciable difference in pressure. A couple months back, I bought a flat of Estates on sale at Cabelas for like $50 or so and have been working my way through them, one box at a time, cutting them down and roll crimping them. And I'll reload them.
Works fine, though it's a bit tedious. Having done both, for this purpose I'll suggest the Federal/Estates as the better choice over the black Remington GL b/c the Federal/Estate plastic is more pliable and works more easily. But for target shooting it's a lot cheaper than $13 or so retail for a box of the very excellent RSTs at Bean's. For reloading, there's a mountain of loads compiled over at 16ga.com and in the low-pressure group there, too.
I think it's the ideal upland gauge, though I do tend to slightly prefer a 12 when hunting pheasants.
