But what if both heads actually come out the other side and are sticking an equal amount out the other side of the target?

I guess though, that if you go by what you are saying then you also have to factor in ferrule length since the Steelhead, for example, is actually shorter than just about any other head out there...one or two exceptions ofcourse.

It doesn't matter, Frank. The blades don't hit their full cut diameter until they're behind the insert on any swing blade design.

When both heads are sticking out the back of the target the same amount, then that proves what I've been saying all along. You have constant friction on the arrow shaft in foam targets and that is what stops the arrow.

Foam stops arrows by friction and, to a lesser degree, resistance to the point/blades (I've had steel blunts penetrate just as deep into foam as field points). Foam is pushed out of the way of the shaft, but the foam is constantly squeezing around the shaft as it passes thru.

When living flesh is cut, the flesh pulls away some from the site of the cut leaving little friction on the shaft. So, if the arrow is stopped, it is stopped mainly by resistance to the point/blades and friction is secondary. Two different materials, two different forces taking the lead role to stop the arrow. That's why you cannot correlate penetration data you've obtained from foam to actual results in flesh and bone.

I agree

I won't say they out pentrate a fixed. What it comes down to is IMO a deer is fairly easy to penetrate. Out of the correct rig most are waisting more energy in the dirt than they are on the deer.

I agree that on deer size game, it doesn't make a whole lot of difference... assuming you've got some horsepower behind the arrows. But when you get to larger animals or low poundage/low performance rigs, then you've got problems to face.

LOL- Been here before! I think i`ll set this one out!

[Deleted by Admins]

ijimmy, sorry, I've been out of town for a couple days. I'm grabbing a computer in Chicago right now while I wolf down a bite between work session...

I shoot the Miniblasters tipped with a Pathfinder point. Total grain weight, 92 grams. 1 and 3/4" cutting diamter. 11 deer shot, 11 deer recovered -- all with full-width entry holes. Three turkeys shot, three recovered, same story.

Total agreement , when I shot magnus heads they would be stuck in the ground a couple inches , vortex's are usely laying on the ground .

Mq1 thanks for the reply , my friend use's sidewinders with great sucess . In years past I was a fixed only bowhunter , after seeing good results with "some models of mecanicals" I have faith in those that I have seen work . I still would never use or sugest a pucket to anyone .

[Deleted by Admins]