Can you say winchester supreme 12 ga . one Ounce max dram in 3 inch? YES you can. BTW my 870 shoots about a 2.5 inch group at 50 yards with these (the holes nearly touch). and at $3 for 5 rounds at wal-mart they aren't that expensive.
In my 870, the same load from federal shoots a FULL FOOT higher at 50 yards. ;(
So practice practice practice.