Define "passthrough". Are you refering to the arrow laying on the ground behind the animal or are you refering to the broadhead sticking out the far side.

The last 5 bucks I've shot with RM Snypers I had one pass through where the arrow exited the animal, 2 of them the arrow fell out the far side on the run and the last two, the arrow stayed in but had an exit hole.

I've had pass throughs with the arrow exiting the body with Muzzy's but I've also had non passthroughs but have had exit holes. I can't remember the last animal I shot that didn't have an exit hole at least.

When I shot my bull elk at 33 yards, the arrow went another 20 yards past the bull, I came home from that trip, same setup and failed to completely pass through a doe...explain that, simply variables.

Oh, all bows shot were over 70 ft lbs of KE.