there sure is a lot of discusion going on here... i quess that i'll have to repeat myself... magnus stingers... go to the store and buy them. next you will open the package and screw them onto your shafts. when you see the deer you want to take you draw back and shoot... if your shot placement is good there will be nothing more needed tobe said.
now go out and do it!!!!

As it has been said, the most important factorsare arrow weight and arrow speed. All else being equal, a cut on contact, two blade, with a 3:1 ratio is going to penetrate the best. As BobCo said, the Grizzly has been found as one of (if not the) best penetrating head out there. It is a single blade COC...

I love this photo taken by Dr Ashby of some of the damaged broadheads from his 2005 testing on Asian water buffalo. I think he has the experience to know a thing or two about what makes a good broadhead. Keep in mind, he's been doing this testing for years!

That is a funny phot straightarrow. Also to note that I believe that Dr Ashby alters the tip a bit on the COC heads in order to avoid curling.

I recognise some of those heads , the g5 , and silver flame look to be in great shape .

BobCo19-65, yes I did notice he was modifying the tip. The modification is similar to the standard tip on the Magnus Stinger. Basically, they're grinding away the thin metal, until they reach thicker metal.

ijimmy, he actually had a problem or two with the Silver Flames. If I remember right, he had some penetration problems that had something to do with the ferrule. As I recall, he said the fix would be an easy one and that the maker was already working on it.

A couple things I noticed in his studies that I hadn't seen studied before: First, I see that he got better penetration on heads with a single bevel vs. two bevels. I hadn't even noticed that companies were making single bevel blades. Second, arrow shafts that were significantly narrower than the broadhead ferrule had much better penetration. This does make a lot of sense, I just hadn't seen data on it before.

His testing is being taken very seriously by many of the broadhead mfgs. Many, are soliciting his comments and modifying their heads accordingly. He simply has the best data out there on what works and what doesn't.

The only reason any of this matters on whitetail is the dreaded shoulder bone hit. All of us will hit the shoulder bone at least oncein our lives - let's be honest.If and whenit happens, I want to blast through it. That's why I shoot70# 30" draw w/ a 518 grain arrow and a slick trick 125 grain bh. It provides a littleextrainsurance on the accidental shoulderbonehit. I'm up around 80# KE with this setup.

This would seem to prove the viability and erstwhile-ness, if you will, of Easton's SlimTech technology, with shafts such as the A/C Super Slim and Beman's Black Max Elite, would it not?

Greg, I agree. It's probably one reason a lot of experienced hunters I know, have switched to Axis arrows. Penetration on live animals is excellent with these.I always suspected that a shaft smaller than the hole created by the broadhead, was a good thing. It's just nice to see real data backing it up.

grim reaper Razor cut