I know I'll get blasted for not having pictures. But I have now clue how to do it and the wifes at work. So heres the verbal account. I tested the 1 3/8 100 grain reaper 2 months ago. It lasted 5 shots through the ball joint and shoulder blade with out damage. The last few shots were through 2 shoulder blades taped together and I shot and hit the T in the blades. I gave it a A+ I was real happy. Last night I shot the 2" version into a new shoulder. First shot was a glancing hit actually shaved a chunk of bone off the joint. The head lost a blade. The next shot was dead center. Ball joint completely shattered. The head was bent a little and snapped a blade but I believe it still would of got the job done. I guess the summary is if you want a shoulder breaking head that its tough as nails go with the 1 3/8". If you want a huge hole on every shot but a ball joint go with a the 2". I think I'll be sticking with the 2" this year.