I can say that I tried my 82nd at 70 lbs with a .300 spined arrow, and had to trim down the arrow to 28" and back it down to 68 lbs before I got completely satisfactory arrow flight.

Glad you posted,because it was your bow that I ran through AA and it took exactly what AA said for it to be right with broadheads if my memory is correct.

Ive seen it lol! and so has TFOX... At the shop, we have an Xforce GX treestand model. @80#'s it shot a 470gr. arrow at 317fps[&:]@29" of draw. At 70#'s it was still in the high 280-290 range but i forget exactly what it was?

That equals roughly 105#'s of KE[:-]

The same bow/arrow setup with weight tubes in teh arrow shot a 720gr. arrow @ 240ish fps.

Sorry my #'s arent exactly right, but its been a while, and TFOX can vouch for me on this one cuz he saw it!

I took the bow hunting the next day after we figured out all of the speeds/ke etc. Needless to say, i was equipped with 2 3/4" trophy ridge turkey tomahawk bh's. I wish i would have gotten to shoot something lol! It would have been ridiculous!

Derek

I think darren is shooting it at 110 ft/lb ke.


I will be willing to bet that he is underspined and no way could he get fixed blade heads to fly,BUT,I doubt penetration would be an issue.[&:]

BUT,I did see the chrono but I have not checked the actuall poundage or arrow weight.

I did double check the draw weight and arrow weight. They were spot on! IT is a true 80# bow[&:].

Its a rhino bow

TFox this thread is pretty interesting since I'm experimenting with ultra heavy arrows myself. I tried to build the arrows based on the recommendations from theAshby reports.In order to achievean FOC of at least 19%, I had to use quite a stiff shaft that could handle all that weight up front. I ended up with 26.5" Axis FMJ 340's with 4" helical feathers, 100grain brass inserts, and 160grain Grizzly BH's with 100gr steel adapters. Total arrow weight 675grains. It's for my 82nd set at 54# and comes to about 12.5gpp.