I set my MK3 up for the 08 season to use the Defiants.
Cleaned the barrel with VP90, put 300 down the barrel, then sorted out the best size.
I,m not a top shot, but my scores went from mid/low 50's, too, low 50's/high 40's, lucky i'm not a trophy hunter.
I used them for the whole UKAHFT season, in order to give them a fair trial, and my conclusion is that.
On a calm day they are great, as soon as there is any sort of wind, i could see them moving of target once they got to around 38/40 yards.
Average Spring Gun Shooter