Vulcan.25 shooting JSB Heavy MKll performance?

"TKA87"I just traded 2 tins of JSB .25g for 2 tins of JSB Heavies MKll and was wondering if anyone was getting any good results? Maybe someone could post there shot strings or some hunting videos.
The Vulcans shoots the MK1 Preety well. Am assuming it will shoot the MK2 even better. There are videos on YouTube where people have posted results using the MK2. Check these out

 
Have you tried the MKII already, are they any good on the Vulcan? a got I tin of MKII today, but I´ll have to wait until the weekend to try them. I took a shot today to a target that I use to shoot at a 100 yards but I didn´t see where it hit. Also I notice a little problem for the pellts to spin in the magzine. Maybe they are too big, but it was just one shot. I´ll give it a try over the weekend and post my results.