You can do a lot better than 25 yards. Throw on a Trulock Full choke, and try a pattern at 50 yards. You will be pleasantly surprised. Note: Aim about 8 inches high.
I just patterned Federal 3" 00 Buck from my Remington 870 with a full choke from about 50 yards. 8 of the 15 .33cal balls hit within 4 inches of the bullseye. Good enough for me, and probably a dead deer