Not that i am going to the worlds sadly due to work, but a 15 m kill at 7 m for me would be a gimmie. A 50ft adaptor makes it a crystal clear target on the luep.
On our open of verminin side shots we have three mini kills, one is a 15 ml. This we normally put out at 30-40 m as then you have to be very precise about wind.
for 7m / 24ft, we use the 8 or 10mm kill! You have to be very precise for the 8mm kill!