I don't have any chronograph results to report, but I can say with certainty that the 20 gauge Longbeard XR in #6 has more than enough to get it done at 40 yards. I took a nice bird right at 40 yards yesterday and it flat out stoned him. I was shooting a 21" 870 with the Carlson Longbeard choke.
The Longbeard #6 does not penetrate as well as the Fed HW #7 - this did not surprise me. Some of the stray pellets that found their way to the breast meat stayed there in the near side breast, where as I've seen stray HW #7 pellets completely exit or get caught in offside breast. So this load doesn't have the same potential as the discontinued HW #7, BUT it does everything you need at 40 yards with authority.
I just wanted to pass this field data along to those who may be uneasy about the 1000 FPS muzzle velocity that Winchester publishes with this load. Don't expect the same margin that the HW's provide, but know that these loads are more than adequate for shots out to 40 yards.