[Juspassin]

Just interested in your opinions.

With a 27 inch draw, and a 450 grain arrow, what poundage would you likely need to be shooting to average 180 fps?

 

[kenn1320]

Depends on the limbs. You also get to a point where increasing poundage requires increasing arrow weight. I was over 180fps with 450gr arrow with 30" draw with only 38lbs using Border hex 7.5 limbs. They are much faster than my Ult pros of same length and weight judging by point on distance.

 

[bleslie]

My calculator says around 50#.
64" BW, 27" draw, launching 29" GT 400s with 200 gn up front.

 

[MartyA]

I rigged a Polaris 23" riser (from the 66" T/D model) to 40# Samick Journey limbs (from the 64" model with 19" riser and 40# at 28") to make a 68" bow with an estimated 36# at 28". I draw 31+" (so, about +7# = 43#) and hit 184 FPS on the chrono. Arrows are full length GT Hunter 5575 (400 spine) 125g tip 3 feathers 417gr.

My old 1962 Bear Grizzly 40# @28 shoots same arrows 180fps at 31" draw (again, about +7# to 47#)

Kenn1320 is doing it with 38# and a nice limbs, I am a bit lower tech with my 43# bow combo and shooting a bit lighter arrow.

This info gets you in the ballpark. Playing with the Stu Miller spine calculator, with Kenn1320 and my info, if you had Kenn1320's setup at 27" about 44# would be close for 450g arrow, mine at 27" you would need more like 49#. YMMV of course.

I am curious what others get with their configurations.

 

[rutandstrut]

Since most of my hunting setups are very close (27" draw, 450 he arrow), my bows average weight to reach 180fps is around 52#

 

[BUTTON]

Check post #24 in this thread: http://tradtalk.com/forums/showthread.php?t=35128&highlight=arrow+speed

 

[A.S.]

I draw 27". I usually hit 180 fps somewhere around 8.5 GPP

 

[Juspassin]

But at what poundage?

 

[moog5050]

But at what poundage?

Using A.S.'s standard divide 450 (your grain weight) by 8.5 to get poundage = 52.94lbs (not sure if that is at his DL or at 28")