I posted one in Bowhunting Gear review about a week ago. Here is a recap.

Two guys took deer (me and a friend). I took a small buck and a doe. Buck went 40 yds, doe went about 80 yds. Both were shot about 1/2 way up torso and about 10" from shoulder joint at 20 yds. Both were pass throughs shooting a 415 grain arrow at about 255 fps. There was NO blood trail on either. The one of the expanding blades broke on the little buck, either on the ground behind or on the ribs.

Other guy took a large 8-pt buck at 20 yds quartering away, hit both lungs. Deer went about 40 yds. He shoots a little lighter arrow at about 258 fps. Clean pass through. Blood trail started about 20 yds from impact point.

They all flew straight. Only concern was lack of blood trail. The exist wounds are about 1-1/2" slices in the side, very clean.