Trying the ACS CX @70#

[Elk Chaser]

will all of the shooting is done no chrono yet but its a real screamer.
getting it tuned still but if you have a chance to own one of these TAKE IT
Bill

[strick9]

I am the worst at short cuts.. but everytime I tune now , I read and reread those instructions and wallah.. they fly right barshaft at 20 yds and great tear..Pm me if you ever want to let that bow go..Good luck..

[Elk Chaser]

strick9
I will let you know it may be a while.
Bill

[Elk Chaser]

Cannot get the Carbon techs to tune perfect so moving to Heritage 350's that I use on other bows
I will let you know
Bill

[Landshark160]

Jay laid it out for you.  Follow his recommendations and you will be spot on.  

[foudarme]

Originally posted by Jay Campbell, JD:
Bill: My wife Karen's ACS CX is 70#, she's been shooting it a year at her 29" draw, and took a buffalo with it this year with one arrow. OL made it for her.

I built a number of arrow combinations that work in it. The Grizzlystik Safari will likely work out of the box, but my 2 dozen were irregular in spine and weight, and I did not end up using them. The Gold Tip Big Game 100s allowed me to make 2 combo carbon arrows that bareshafted perfectly, one at 900 grains with 17% FOC, and the other at 1020 grains with 24% FOC. The 900 grain had a full length aluminum 1516 shaft inside, and the 1020 grain had a half-length Cabelas Carbon 230 inside.

The 1020 grain flew at 156 FPS. I shoot the same arrow out of my BW PLX 80# LB, same FPS, and my arrrow went broadside through both rib cages of a buffalo in oz, killing him in under a minute a few yards away. Let me know if I can help with construction plans. - Jay Campbell, JD

What is your spine deflection on the GT big game fulfilled with the 1516 shaft?
Do the 3 RIVERS 8gpi plastic weight tubes fit inside the GTBG and have you spine tested this perticular setup ?

[Elk Chaser]

Just tried the Heritage 350's and there all of 3" apart for the first 6 arrows.
Now its my ability to get it any better.
I have to move outdoors as the basement can shoot 15 yrds but no more.
Love this bow.
Thanks for all of your help
Bill

Chrono numbers still coming this week.

[Elk Chaser]

Chrono tomarrow

[Mike Orton]

ElkChaser

I too shoot the A & H ACS-CX 66" 66# at 28, which translates to 69# at my 29 draw.  I've spent a fair amount of time this past summer working up an arrow solution.  This is what works for me, admittedly it might not work for you.

I shoot a full length 32" Easton Axis 340.  There is a 100 grain Brass insert inside.  I foot the shaft with a 3 inch section of 2018 Aluminum shafting and use four 5 1/2 inch Banana cut feathers.  I use a modified four bladed Grizzly Grande 190 with a 100 or 125 (matters not) steel broadhead adapter insert.  The broadheads weigh in at about 285 to 300 grains, depending on how much materials come off during the sharpening process.   All adhesive is done using JB Weld. I have a total arrow weight of 830 grains and the arrow is 26% FOC.  My bow will consistently push that arrow through a chrony at 185 fps, if I due my part and stretch out the entire draw length. I have found this bow is very fussy about needing my full stretch on the draw to achieve that velocity.  If I don't stretch out fully, the chrony does not reward me with the desired velocity.   That arrow weight and velocity give me a momentum factor of 62, which is very desireable, it's impressive in fact.  I can not comment on terminal performance as this year I remain a charter member of the "Brotherhood of the Bean". (Translation: I aint stuck nothin yet.)

Hope this helps you in your quest.

 

[Elk Chaser]

Mike
Thank you I am getting real close with the heritage 350 at about 600 grains
Thanks Greatly appreciate this information I will try some
Bill

[Elk Chaser]

Chronograph  with a 570 grain arrow is 203.6 fps


Thats more than enough for me

[Legolas]

Goodness with that bow you ought to be able to kill bear, elk, whitetail and turkey with one shot. Hard part will be finding all those lined up in a row for the pass throughs...

Paul

[Elk Chaser]

Paul,
Your right its a bow that performs all right
I think at 600 gr about 200 fps
I use them for Elk Hunting in New Mexico

[foudarme]

is it easy to obtain from A&H they make heavier limbs than 60#?...I ever own a 64# ACS bought brand new on xxx but I would like to get another one at 80#@28 what is my usual draw weight..I am on the list since 10 monthes and it will be soon my trick...If not, maybe another solution should consist in taking a 60#@25 one, 64" long, and to shoot her at my 28" draw length, but I am wondering if the limbs would support such a treatment ????

[Elk Chaser]

This bow was to go to the Netherlands and the buyer backed out. these are high poundage limbs for a ACS CX normally there 64# for a 64" bow or awful close to that .
These limbs are a rarity and glad I have them
Drop Larry a line he would be able to tell you . I have never heard of any over 70# myself
Bill

[foudarme]

I will send him a mail and see what will be his answer...

[Elk Chaser]

lease let me know the answer
Bill

[Jay Campbell, JD]

Foudarme:

I've been hunting and working on the road. You asked:

"What is your spine deflection on the GT big game fulfilled with the 1516 shaft?
Do the 3 RIVERS 8gpi plastic weight tubes fit inside the GTBG and have you spine tested this particular setup ?"

Deflection on the raw GT Big Game 100 is 2.1 on my meter. Deflection on the GT Big Game 100 with a full length 1516 insert is 1.8. Deflection on the GT Big Game 100 with a 12.5" (in the front) Cabela's .230 carbon is .200.

What this shows, I believe, is that deflection is only a starting point, as these shafts perform differently than their deflection would indicate. The GT Big Game 100 with the 12.5" .230 shaft inside "acts" (dynamic spine with bareshafting) like a 1.5 deflection or stiffer. I believe this is because the weight and extra stiffness is all front loaded, which also produces the 24% FOC.

Similarly, I have spined various weight tubes, up to the 11 grains per inch, and shot them bareshaft. There is no change in static spine (measured spine). However, they "act" weaker (dynamic spine). This will always occur, in my experience, because the weight of the shaft is being increased along its entire length without adding stiffness with the weight tubes (unlike adding the 1516 or the .230 shafts inside).

Hope this helps. Again, in real life testing and performance, the .230 insert produced a 1020 grain arrow (with significant weights up front), that bareshafted perfectly from the 70# Adcock, and passed through both rib cages of a 2,000# water buffalo, killing it with one arrow. This actually happened twice, as my wife and I both used the same arrow, and each took a buffalo. - Jay Campbell

[foudarme]

thanks jay...I have myself done a lot of experiments with 2020 and 2117 arrows fulfilled with 17 and 19/16 shafts...I have just bought a dozen of GT100 for trying them in the range of 80# to 100#...so your experience is important for me.... However there is something that I haven't understooden (maybe cause of my language gap): what do you mean by a "2.1 or 1.8 deflection on your meter", I only knew the .xxx" deflections type? what are your unit measure?

[Jay Campbell, JD]

Fourdame: Its the same, I'm just putting the decimal in the wrong spot. Getting the GT 100 shafts to fly perfectly for 80 - 100# is not a problem, it only becomes difficult when you need the arrow weight in the 900 to 1000 grain range. Our "everyday" hunting arrows do well at 730 grains with no shafts inside the GT BG 100, and 100 grains of weights, a 125 grain adaptor, 15 grain insert, and 160 grain head. That's for a RD 80# Black Widow PLX longbow at 28". - Jay