Single bevel bloodtrails

[bluegill]

"Over 55 lb bow multi blade heads are ok to shoot
Under 55 lb bow go with two blade for more penetration."

I agree with TJ's statement above and actually will go a little farther. If I can get repeatable pass through, I keep increasing the size of the cutting diameter.

That is if I shoot a couple of deer and get a clean pass through with a 125 grn. 1 1/8" wide 2 blade, I'll start trying 135 grn. 1 1/4" 2 blade, then 140 grn. 1 1/2" 4 blade and so on.

I may have to change arrow length/spine or both to keep flight acceptable, but IMO if you are getting complete pass throughs you are in a since wasting energy.

I would much rather have an arrow hang by the fletches with a Magnus I 4 blade than a less wide 2 blade.

I have killed a pile of deer with 125grn. single bevel Grizz. and they definitely have their place but, all things equal a bigger head will make better trails.

Sean

[Pete McMiller]

Shot a bull moose this fall with a single bevel - almost no blood trail at all even with a double lung hit.  Then again he only went 35 yards after the shot and was full of blood when he went down.       There are a lot of factors that come to play in a good blood trail and I think the type of broadhead isn't as much of a factor as it being sharp and in the right spot.

[sheepdogreno]

Every deer I've doubles lunged I couldn't tell a difference.... Ones I've heart shot thru and thru I could have followed the blood trail by moonlight... I will agree with Roger upon autopsy of lunged deer with marginal blood trails I've observed a lot of fat. Usually late season deer who have had a healthy diet. I'm a firm believer if its sharp and cuts thru the lungs or heart it will kill a deer doesn't matter what brand single or double bevel

[Arctic Hunter]

I've shot two deer with helix single bevel broadheads this year. And I've also used the magnus stinger 4 blades on two. (One was initially shot with a magnus and a follow up shot with a helix). I will say the helix on its second voyage  this year did a number on him. Arrow blew through the front shoulder and out the other side. Broke the back 10 inches or so off, but still got two holes even with hitting the shoulder. No skinning pics, but the hole looked like it came from a butcher knife an he died In about 70 yards. I don't know that the blood trails were any better, but the penetration was enough to keep me shooting them. FWIW, I shoot a BW PSA 57# at my 30" draw. Axis 340 trads 75gr insert and 150 gr broadhead.

[Bladepeek]

One problem that I have had with single bevels, is when the head is laminated at the point. A double bevel has the edge at the center of the main lamination.

A single bevel must (if you want it single bevel all the way to the point) be sharpened all the way through the center lamination, the braze layer, and to the far side of the outer lamination. Hard to explain in words, but I think you can picture it. That takes a good bit of filing, which makes the head somewhat narrower. I sort of cheat and make the point a double bevel for a short distance and then go to a single bevel for the remainder of the blade rearward.

On my Zwickeys, I like double bevel better for that reason only.