What if I cut it to 27".

He actually needs a .270 spine,a target arrow ain't gonna happen.Even at 27",a 300 spine is on the weak side of good.

I had one of you guys run my numbers in OT2 and it came back that I was on the high end of the green zone, if that makes any sense. Those arrows are a .345 spine.

Think about it,how many bows on the market are shooting an ibo of 350.Why would an arrow spine designed years ago be spined for it?


I think we will start seeing heavier spined arrows start hitting the market real soon to accomidate these speed demons.Right now,there are a few but they are very few.

I'll turn it down to 60# and see what happens. Thanks for the advise.

If you don't mind, I'd like to know what those heavier spined arrows are, so I can take a look at them.

I am going by AA,I have not personally checked any of these arrows.

Trophy Ridge 300's are listed as having a .270 spine on Archers Advantage,might check with the factory to see if that is correct. 11 gr per inch

AA also list CX V MAX 2540 as having a .270 spine but I don't see them listed on their website,maybe discontinued. 11.6 grains per


And Gold Tip has the big game 100+ is listed as a .280 spine. 10.6 per


And,of course,there are some aluminums to consider.easton ,of course.

I saw them before, but I completely forgot about those Trophy Ridges. That is one heavy arrow. I actually like that. Not only are those arrows the most consistent available, but they are so heavy that I could probably get a pass through on an African elephant. That would be sweet! I'll probably go with a 125 tip, unless you guys think I should go heavier. I want to use the Grim Reaper RazorTip 1 3/4" diameter, which is available in either 100 grain or 125 grain. For this reason, if I need a heavier tip, I'd like to use a heavier insert to get my FOC up instead. By the way, what is a good FOC?

What do you think I should use for fletchings? Are my 4" shields still going to be effective on this heavier arrow? I think we are talking easily over 500 grains. Not the heavier arrow I have ever shot, but easily the heaviest my 82nd has seen.

Let me know.

4" feathers will be perfect.

125 grain point will put your foc around 12% with 4" feathers and you will still be shooting 300 fps with a 470 grain arrow.


Weights might be off on the accesories because I just used some generic numbers because I can't find actuall weights on their site.Should be real close though.

What weight insert should I be using to get the total weight down to 470 at 27"?

I was using 11 grain inserts with a 28 3/8" arrow to get 472 but I am sure that is too light of an insert.

You will need to contact the factory for specs.