Will this work? (arrows)

[Brad Arnett]

Hi gents, just was wondering if this would get me in the ballpark and hopefully work. I'm running a 50#@28" MOAB and I draw a true 27"s. I'm  planning on running 160 grizzly's w/100gr steel adapters, standard aluminum inserts in GT trad 35/55's. I've never done it before but I plan on just bareshaft tuning starting with them at FL and cutting down from there as needed.

I've played with the StuMiller spine calculator and "IF" my inputs are correct it looks like it calls for about 50# and when I spec out a 35/55 with 260gr they'll be at about 45# down at 28".

I'm just wondering if my chosen combo will likely work?

Thanks in advance for your time, Brad.

[Outwest]

Sounds like it should be close.
Only one way to find out.
Start tinkeren.

John

[trick00]

Just make sure before you cut!! you are probably not too far off from being right with a full length shaft. I shoot full length 35/55s with 100 gr brass insert and 225 field points out of my 56# fox royal crown, 27" draw and they will bare shaft all in a nice 8" circle with fletched shafts at 35yds when i do my part. like outwest said, start tinkerin! oh yeah,  in my experience stus calc. seems to always show a stiffer shaft that what bareshaft shows with carbons. it seems to be on the money with wood though. go figure

[Brad Arnett]

Thanks Guys for the info. I've been shooting a 60# bow for years and am just stepping down in weight due to elbow issues. All the arrows I have on hand that are spined right are all too short since they are for my wife's bow/bows and her short/er draw length. She's also only ever uses wood arrows so I'm just starting from scratch and haven't had to tune a bow in a long time. Just was hoping that I was going to be close with what I want to run. Thanks, Brad.

[Steve Clandinin]

Hey Ol'buddy,good to see you tinkerin' with that new bow.I've never really shot Carbons.I was shooting 28-1/2" 2213 Alum's with 200 grains up front.Zwickey Eskimo and 75 gr.steel inserts.Total arrow weight was 597 Gr.they flew like darts.I would have tackled anything with that bow of yours.I really hope you like her my friend.

[JimB]

I suspect that setup may be a little weak.You are planning on 275 grs up front on a .500 spine shaft and Steve's setup was a little over 200 grs up front of a .485 spine shaft.Only tuning will tell but you may need to reduce front end weight or go to 55/75's with that much weight.

[JamesKerr]

I would think the 35/55 would work well for you.

[Brad Arnett]

Thanks Steve, I got lucky and "I" get to use the MOAB instead of my wife. I picked up a used Bear Montana for her last week and she just loves it. She said she wanted to keep shooting the Montana and I didn't argue with her. (grin) I've always been a recurve guy and have never really played with too many longbows that I liked. As soon as I picked up this MOAB I was impressed with it. It draws very smooth as well. I just plain like it!!!

All, I'm not dead set on point weight, that's just where I would like to be. If I have to go down to get them to work I can live with that. I haven't ordered any new broadheads yet so I'm good there. I've just wanted to try the grizzly's and figured this would be a good time to start.

[Steve Clandinin]

Brad on almost all my arrows I've had some real good luck with 160 gr. Grizzlys with 20 gr. alum inserts .Mo matter what weight arrow I put thse on they just seam to fly great.I just talked withBill at zipper and ordered 1 doz. new 170 gr. Kodiaks.I've got some big plans with these heads.
I was just looking at your set-up again and think for your set-up it might be a bit heavy.Try 200 grain total up front,they sure shoot great for me.

[Stone Knife]

I think that cut to 28" they will work with that weight up front. Start long and work your way down.

[JimB]

You do definitely have some shaft you can cut and that would make a difference.I would start with standard aluminum adapters first and see how much point weight you can use,then go from their.

[Brad Arnett]

Will do Jim. I'll have a dozen shafts showing up this week and I'll get to it. I think I'll start with around 200gr up front and see where that gets me, then I can add weight if needed.

[Brad Arnett]

Well I was surprised with what I ended up with. I played with the calculator and my old 55/75 gt's from another bow  and it looked like 350gr up front would be right. Since these already had 100gr inserts I decided to try them after screwing in a 250gr field point.. To my surprise I found they bare shafted quite a bit on the stiff side compared to the fletched shaft.

So with that experiment over I moved on to the 35/55's at full length. I started with the standard al insert and 250gr head. The bareshafted weak. I started trimming and when I got to just under 29" I had the bareshaft hitting right with the fletched shafts.

Now on the calculator this setup should be weak, but man do they fly good. I'm not gonna worry what the calculator says and I'm gonna shoot this combo.

Just thought I'd let everyone know where I ended up. Brad.