I'm running the black eagle carnivore 250s they are 9.7 GPI with a72gr inserts with 100gr heads and they are around 505gr with wrap and vanes. 300 spine carnivores are 8.5 GPI as well

This is out of my E35 75/30.5" and my monster MR6 70/30

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Thanks for the suggestion, sounds like a great set up


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I shoot bloodsport impact hunter .300's out of my e35 at 80 #'s. I shoot 125 grain heads as well


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You are WAY over thinking this. If that is "fun" for you enjoy and many people like to. But if you are thinking you will gain some big advantage crunching all these numbers you won't see it with your rig. Even for Elk you are in the overkill so deep it's just a matter of personal interest more than anything else.

 

This. The only thing I would caution is to make sure your broadheads (fixed) i am assuming fly well going that fast. I also shoot 80 lb limbs but my broadheads (slick tricks) fly much more consistently at about 280-290 fps. That puts me with about a 500 g arrow.
Agree its fun to tinker though


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Go thinner even with the Black Eagle 250 Rampage. .001 straightness.


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Is there a 6mm Axis?

If you want to shoot 80# [which I shot for a decade] I would be careful you aren't underspined....overspined is fine. Personally I would err on a heavier arrow arrow for many reasons [primarily tuning] that I outlined in a whole thread over on Wapiti Talk.

 

I shoot an insanity cpx at 75 lbs. the arrow I'm using is an gold tip .300. 9.3 gpi. Around 29". 125 grain tip with 30 grains behind the insert. I do have a wrap and lighted nock. Total weight is 488. Should be under spined but it shoots and tunes amazing. I've played around with more and less weight. I think a lot of it depends on each setup. A million ways to skin a cat. Ymmv

 

The .300 is tuning well for me too. Thanks for the response


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Don't defend yourself , shoot 80 if you want . Don't let another mans limitations be your own ... I shooy a vap 250 out of my 80lb bow


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Thanks for the positive perspective.


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I don't know your draw length, but on a bow like the MR5, I think you might be a tad on the underspined side. I'd opt for a stiffer arrow like the axis 260's, I think that will give you a little more flexibility in the tuning department. I shot 80+lbs for years, limited arrow selection was one of the number of reasons I decided to drop bow weight, I shoot 70 now and I still need to be closer to 300 spine to tune decently.

 

I am at 30" draw and I thought the same but the 300 is tuning well on paper and grouping well at short and long yardages. If I go up in spine I would likely lean towards the black eagles mentioned earlier in the thread. Thanks for the input


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i SHOOT AN 80#mr7. Everyday arrows are .300 spine Easton Aftermaths. My heavyweight hunters are Easton FMJ .250 spine, with 75 grain inserts and 125 grain heads. These weigh 712 grains.

 

Shooting 280 FMJ Injexions out of the CST at 80/27.5

 

Gold tip big game 100 and 125 gr heads. Bad medicine for All north American big game. I like hellrazors thunderhead and steelhead Broadheads. All tuned well on 28 to 29 in shafts.

 

Generally I think your overkill if BUT it cant hurt. Shot an elk through both shoulders once. Broadhead only made a pin prick exit hole. Literally the size of a pin. 78 lbs, 29" draw with a 630 grain arrow with a 3 blade muzzy. Could have been bad news with a mech but at least you got the energy compared to most. Other than flight characteristics I am inclined to say mech for elk are a disadvantage in my experience and yes I killed an elk with a Rage once so its experience.

Each their own. I wouldn't lighten the shaft up at all. Your likely going into the realm of underspine lightening the arrow and then adding weight. Might be a good idea to add 50 more grain to insert and keep arrow shaft the same. Make the bow a little quieter. Dont need 328 fps. A little more FOC wouldn't hurt and could be helpful. Generally, I wouldn't go lighter.

 

I will also say to the op , if you want to go mech keep your arrow weight heavy with the heavy poundage , check out the rage hp it's 1.5 cutting diameter and I know I would shoot it at an elk with confidence out of my set up . I'd prolly shoot the rage trypan as well with the swept back blades .


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The trypan looks very promising.

 

So what have u guys found to be the weak link on the arrow setup. Is anybody footing their arrows?

 

I haven't with my vaps , I have in the past . I would again if I was Cape buffalo hunting or something but not for elk or deer


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I am shooting the gold tip kinetic 300 out of a 80lb energy. Prior to thst I shot axis 340s both fly great.

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If I were you, (and I shoot 80#) I would shoot a black eagle rampage 250 (which I do). It comes with a 56gr insert and at your length your total weight would be around 535 grains with a 125gr head. That'd put you at about 290ish fps. Your broadheads will tune better at this speed , your foc will be about 15% which is great and your KE will be in the high 90's. And believe it or not your long range trajectory and energy will be better than the lighter setup.

 

using the pinwheel software i had a very difficult time finding a .300 spine arrow to work with my 70# bow, much less my 80#. i can get underspined arrows to tune but its way more work. for my 80# i went with gold tip kinetic kaos .200s since i wanted to add weight. i'm at 641gr with that bow and have no plans of going lighter. 275fps, flies great, hits like a hammer.

Bullbandit i also footed those arrows. the build is in my sig. i have several friends that have shot and lost a few elk each, they are big, tough critters. i want to do all i can to minimize loss.

 

My mr5 at 70lbs and my obsession defcon6 80lb, I shot Kinetics 300's with a 100gr broadhead come in at 470gr. Arrow shot well out of both setups.
28in draw

 

didn't shoot 80, but i just finished a whole year hunting with 73lbs @ 30", i was shooting a maxima red 350 and a 2'' 100gr swhacker. total arrow weight was somewhere around the 450gr mark. 1 bear and 3 whitetail, arrows were darts, flew great. one of my does was 55yd heart shot, none of my animals went more than 30 yds. i shot the same arrows out of a 82lb Matthews as well(for fun), flew great.

good luck man!

 

I had one of my arrows break out the side on my Easton DG FMJ. I am moving to the GrizzlyStik for my heaviest arrows and don't expect that to be a problem given how long my inserts will be.

 

i highly recommend you see the Grizzly sticks in person before purchasing AND do a search....they feel like a clothing rod in your closet next to a FMJ...those things are logs.

 

Another vote for bloodsport impact hunters. Shooting them out of Monster MR6 at 31" set dead at 80.

 

I use the the Black Eagle Deep Impacts in 250 spine with Firenock outserts out of my 80 lbers. They hold up great. Only broke 1 on a critter. They are very tough. Finish weight is 450 grains. They also shoot great out of my 70 lbers.

 

hope your shoulder are good when u get older...I work out too but your choice,,What gain do you really have over 70 lbs...Just thinking of your health as all...:weightlifter:

 

I have a 1 pin 500 gr arrow setup to 35 yrds yes it hits a little low and high at 20. That extra couple yards helps piece of mind in the moment of truth when i cant get an exact yardage. I also know that my arrow will be sticking in the dirt on the other side after the shot even when i hit the shoulder. Those were my reasons. My elite at 82 pulls easier and holds better than the destroyer and insanity at 72.

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Im shooting Beman Speed 300's which I believe are under 9 GPI and weigh a little over 400 grains with 4 fletch, a wrap, and 100 grain head. Shoot awesome and havent had a problem with penetration. I like the little bit of less pin gap

 

Personally, I like heads and arrows that will do fairly well when impacting bone. At age 70 I have dropped from a high elk weight of about 90 lb (30 years ago) to 60 lb now. Last year I shot a nice bull with a 340 ics pro hunter shaft and a 190 Grizzly. Total broadhead weight with insert was about 225 grains. The newer single bevel grizzlies can be made razor sharp. My buddies use Rage broadheads and have shot some nice elk. I just can't get myself to shoot expandable heads on elk. If I could be guaranteed a double lung shot yes. However, having hunted for several decades I know that shooting animals is very different from shooting paper. The animals tend to move and the bigger ones often give you only an instant to execute a shot. Marginal hits are sometimes the result - even when you thought it was a perfect set up and good shot execution. I read somewhere that one should tally the percentage of perfect shots one made on animals harvested. Few long time hunters will score anywhere close to 100%. Some marginal hits are a reality for most bow hunters. Maximum penetration is the most important thing for marginal hits and doesn't hurt a thing on perfect hits. This is achieved using heavy arrows with good STRONG broadheads.

We hunt over ponds on the evening hunts where distances are fairly well known and not too long. For this situation, tight pins are not so important. When we chase them in the mornings, faster arrows and tighter pins are a definite advantage. Thus I have both a pond setup and a chase setup.