why that broadhead

[Big John]

Norm is quite close. But yours will be lighter!
Less the Lumenok weight.
And I would not hesitate using those on Deer as well!
I keep trying different Broadheads every year. Just like to know what I'm talking when discussed. Proably tried a couple dozen. Many were sold on here afterward.
The most accurate I'm seeing from fixed and the Matrix Bow are The G5 Montecs.
The Exodus wasn't bad either. Slick Tricks are always on my hunting trips anyway, but,
the Montecs will be flying from the 380 this season!
However, I quite agree that the mechanicals have come a long way form earlier versions.
Some being .40 thickness blades now. I would use many of them no problem!

Big John

[mr meat]

the reason i asked was,thinking those for deer not turkey(till now) but wondered if i could get close to my weight of which iam shooting now out of the 355 and thats 383gr i see that its going to be close!

[Carnivorous]

Norm is quite close. But yours will be lighter!
Less the Lumenok weight.
And I would not hesitate using those on Deer as well!
I keep trying different Broadheads every year. Just like to know what I'm talking when discussed. Proably tried a couple dozen. Many were sold on here afterward.
The most accurate I'm seeing from fixed and the Matrix Bow are The G5 Montecs.
The Exodus wasn't bad either. Slick Tricks are always on my hunting trips anyway, but,
the Montecs will be flying from the 380 this season!
However, I quite agree that the mechanicals have come a long way form earlier versions.
Some being .40 thickness blades now. I would use many of them no problem!

Big John

Sounds good John can't wait to have the final product so I can do some testing with the 355!!!!

[j.krug]

I'm a big fan of the mechanicals, and specifically I have grown to like the Rage products. Certainly not for the price as they are some of the most expensive out there. I find them to be reliable, very accurate and extremely deadly.

That being said I know there are lots of other reliable fixed blade and mechanical broadheads out there as well.

[vixenmaster]

Wonder what KE is pushin those NAP 170gr 3" cut BH's ? I was pushin almost 70KE wid a 400gr total usin swhacker 2" barely gotstid a pass-through on oa Doe i killed

[cb750]

Not sure if this will answer your question but I found a Kinetic Energy Calculator on Gold Tips site. http://www.goldtip.com/calculators.aspx

[nchunterkw]

Wonder what KE is pushin those NAP 170gr 3" cut BH's ? I was pushin almost 70KE wid a 400gr total usin swhacker 2" barely gotstid a pass-through on oa Doe i killed

My opinion is that momentum and not KE will affect penetration more. I think a heavier arrow like maybe 450 or 500 would have gotten you more penetration and probably the pass thru....... which is my goal for every shot

Maybe it's time to make some new homemade ballistics gel and do some more experimenting!!

[paulaboutform]

I'm unconvinced of the good doc's theory on momentum vs kinetic energy. I think it looks great on paper and the traditional shooters love and swear by it. I for one would rather see a 400 gr. arrow with a super short chisel point bh smash through a shoulder at 360fps than a 600 gr. arrow at 200fps. with a 3-1 bh.. I think there's a balanced sweet spot with weight and velocity.

[Kegbelly]

Y'all probably have already read this but it's pretty interesting, and it touches on the momentum vs KE topic.

http://bowsite.com/bowsite/features/pra ... netration/

[vixenmaster]

I jus posted on this at i have found Spitfires work well wid 60lbs KE under 30yds, but they're dimpled clips. 100gr 2" Swhackers bein banded take more oompf to open. I am waitin on this yrs season to open to try to finish up swhackers & Toxics

[Twisted Mister]

Hey all, I'm new to crossbows, but not archery in general. i have used Rage for a couple years, but the fellow that sold me this Vortex told me to stay away fro mechanical heads, said he did not like them. he gave me 6 NAP Thunder Head and said they were the best for that bow. He said he shot a bunch, and these fly good as anything, and cut through. i have not shot them yet, but he seemed smart about them.

[vixenmaster]

Hey all, I'm new to crossbows, but not archery in general. i have used Rage for a couple years, but the fellow that sold me this Vortex told me to stay away fro mechanical heads, said he did not like them. he gave me 6 NAP Thunder Head and said they were the best for that bow. He said he shot a bunch, and these fly good as anything, and cut through. i have not shot them yet, but he seemed smart about them.

I would say try them out at 20-30 & 40 yds & see how you like them. Welcome to the Forum

[nchunterkw]

I'm unconvinced of the good doc's theory on momentum vs kinetic energy. I think it looks great on paper and the traditional shooters love and swear by it. I for one would rather see a 400 gr. arrow with a super short chisel point bh smash through a shoulder at 360fps than a 600 gr. arrow at 200fps. with a 3-1 bh.. I think there's a balanced sweet spot with weight and velocity.

What convinced me was the good docs physics. Especially when you consider the resistance forces and how they vary with the square of velocity. It is also hard for me to argue with his real world data from shooting real animals. But heck half the fun with these bows is shooting stuff and playing around. Let's do some experimenting!! Come up with a plan and test it out. Shoot a couple of different weight arrows into stuff and see what you see. What I know from all my shooting is that a heavier arrow retains more KE at distance than a lighter one when shot from the same bow. That tells the air is resisting the heavy arrow less. So my thought is why should animal tissue act any different?

However I do agree that three is probably some middle ground that would be good. Dr ashby is definitely on the super heavy arrow side.
Keep in mind that VM is shooting a lower poundage bow hence my thought on a heavier arrow with thst particular BH.

Keg belly. I stopped reading when I saw the KE is King quote. If that were true it would be simple to prove and we would not be having this discussion. Lots of really smart people have looking at the penetration issue. To understate it wuite a bit ..... it's a pretty complicated thing.

[Twisted Mister]

Thanks, i think i will try the Spitfire, been reading about them here, seem to be the best choice in mechanical heads. I'll try the ones that i got free too, but i like mechanical heads.

[Kegbelly]

Keg belly. I stopped reading when I saw the KE is King quote. If that were true it would be simple to prove and we would not be having this discussion. Lots of really smart people have looking at the penetration issue. To understate it wuite a bit ..... it's a pretty complicated thing.

I'm not saying the author is right or wrong because I honestly don't know, but about two paragraphs after you stopped reading LOL he says the formula for momentum is very similar to the formula for KE, and the differences between the two are so minor that they don't seem to make a difference in the real world.

I go along with what paulaboutform said, which follows what Big John said ... in my experience I've found about 375 grains total weight and a razor sharp COC broadhead to be about the perfect blend of speed and weight for a flatter trajectory, excellent accuracy, and still maintain way more than enough KE to ensure complete pass thru's on whitetail deer. I've never NOT had a complete pass-thru with that combination shooting in the upper 320-fps range with my exomag. When my Big John arrows get here I'll be shooting 380 grains total weight with the M380 at an estimated 360 fps, thats about 109 KE and almost 3 times what's needed to take a whitetail. Provided i do my part and place my shots well, I don't foresee having any penetration issues