MCS, I shoot a 52# @ 26" centaur. Arrow is easton axis Simmons 2 blade with a 100Gr brass insert, arrow weight 495 Gr. Does as 95#, shot 11 yards. Arros fell out of her about 10 yds from shot. The 2 blade entered horizontal and although the point was between 2 ribs on entrance and exit, the blades caught both ribs on either side on entrance and exit. I think that is what stopped the arrow from being in the ground.
Kibok&ko, S. Sam has it. I used a Lansky clamp and the 3 in 1 Jewell stick. Worked well. Just need to get an angled clamp I think that will make it even better.