Bought them for my TenPoint bow this year & have had HORRIBLE results on 5 animals shot. Blood trails are minimal at best & the deer (minus the 'yote) are going a long way before dying. All double lung shots except one quartering away shot which only hit 1 lung. Gong back to the Spitfires. What are your experiences w/ the Killzones? I heard good things about the Killzones, but they're not working for me...