awful......terrible. I have a 3500 with 28" barrel. I patterned mine with a few different shells and had consistently horrible patterns. I found some goober willing to buy the factory turkey choke for $20 and got rid of it asap.
For what it's worth, I'm now shooting a Primos tightwad ($25) and have fantastic results with it shooting HeviShot Mag Blend. buddy of mine has an older 2000 and is also shooting the tightwad with custom blended shells (so a very similar setup to mine) and is having equally good results. We've both tried the tightwad with the Longbeards and we both had it shooting several inches high and right with that setup.
So, Primos tightwad + blended shell (like the Mag Blends) seems to be a killer combo
At the advice of my attorney, I issue the following disclaimer:
"This post may or may not be intended as humor and/or sarcasm and does not necessarily reflect the actual views of the poster."