400 spine out of 80 lb bow ????

[romaknows]

I always thought a stiffer spine was going to be best for a heavy lb bow , but I noticed that Cameron Haines shoots a 400 spine fmj with his 80 lb hoyt.I shoot 340 fmj's out of a 70 lb elite ,but would love to lose some weight by going down to 400's .

[turkeyfeather]

I'm by no means an expert, but that sounds like a light arrow for that.

[hughjorgan]

I always thought a stiffer spine was going to be best for a heavy lb bow , but I noticed that Cameron Haines shoots a 400 spine fmj with his 80 lb hoyt.I shoot 340 fmj's out of a 70 lb elite ,but would love to lose some weight by going down to 400's .

If you are concerned about the weight of the fmj, why not just shoot a carbon like the axis?

[romaknows]

I always thought a stiffer spine was going to be best for a heavy lb bow , but I noticed that Cameron Haines shoots a 400 spine fmj with his 80 lb hoyt.I shoot 340 fmj's out of a 70 lb elite ,but would love to lose some weight by going down to 400's .

If you are concerned about the weight of the fmj, why not just shoot a carbon like the axis?

Ya ,I am going back to carbon's (dont care for the fmj's) I just saw what he is using and have never heard of that before , I was always under the impression that you would get a better tune with a stiffer spine shooting that much weight.

[scotty1969]

watch some videos on shattering carbon arrows before you decide deviate from specs.he probably doesn't shoot his arrows much before they are replaced with new.... i shoot beman 340 on my 80 pound bow because that's what the specs call for and i get close to 312 fps. with them

[turkeyfeather]

That shattering arrow thing is what would make me nervous. That doesn't look like a good time.

[romaknows]

watch some videos on shattering carbon arrows before you decide deviate from specs.he probably doesn't shoot his arrows much before they are replaced with new.... i shoot beman 340 on my 80 pound bow because that's what the specs call for and i get close to 312 fps. with them

They were 400 fmj's so maybe he feels safer ? Can the fmj even shatter ??

[scotty1969]

yes they all can possibly shatter.but what were mainly looking at is the ability to flex properly when shot.look at a arrow size selection chart by one of the big name manufacturers for length weight and cam design to match what you have for safety.

[scotty1969]

you do realize what the 340 and 400 and 500 meen right? and please im not being a smart alek

[JLS]

There are much better ways to lighten your arrow than to use a spine that is too weak.  Find a shaft that is fewer grains per inch.

[deerslyr]

If I remember correctly he shoots a fairly short draw....but im not sure if its short enough for 400s out of an 80 lber?? I did see on facebook tonight that he shot a pretty good 160 yard group  So its obviously not affecting his accuracy

[scotty1969]

weight is kinetic energy witch is kill capability you lose some speed when using heavier arrows but your bow will have a longer life etc etc etc it goes on depends on what you want heavier is safer.anything over 65 pounds in my opinion needs to be 340 but that is just my opinion.and your bow will have an ibo recomendation for safety

[romaknows]

you do realize what the 340 and 400 and 500 meen right? and please im not being a smart alek

Yes i know what all this means which is why I thought it was odd that someone shooting 80 lbs would use a 400 SPINE shaft and not a 340 or even what most would recommend , a 300 SPINE.Please read OP.

[bucklucky]

For cameron , looks like he is on the border of using a 400 spine or 340 with his draw length .

[str8meat]

bad idea using that light off spine for the heavy pullers. my bowtech goes 83lbs. i have to shoot easton axis 300's or goldtips 100 + neither of which have stopped on impact of an animal. be carefull using the light ones might be a splintered limb in the future.