Gold Tip Online Tool - Build Your Own Arrow

Discussion in 'General Crossbow Discussion' started by rchristoff, Jun 7, 2012.

  1. rchristoff

    rchristoff New Member

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    Hello Everyone,

    The crossbow I'm considering is rated at 385 fps with a 398 grain 20" bolt (200 lb. peak draw weight, 14" power stroke). I called the company and they warrant the xbow for anything 390 gr. and up, so I have been doing a lot of research regarding arrow weight, spine, and foc.

    One tool that I found to be really helpful was the "Build your own arrow" online tool by Gold Tip. I have messed around with the different variations and I am stuck between the Laser II Pro and Laser III Pro, as I plan on doing target shooting out to 100 yards; so the shaft weight variation I want to keep to a minimum, but I also want to keep the FOC in the 12-18% range if possible.

    I plan on building these myself to make them as consistent as possible and match the spine correctly, however I have a few questions for the experts out here.
    1. What is the better spine for the bow that I have described above (Eastman (Carbon Express) Covert CX2) - the Laser II or the Laser III? I really like the math results with the Laser II, but I am afraid the spine may be too weak for this bow.
    2. Does anyone shoot a similar setup and what have their experiences been?
    For the curious cats out there, I've attached some of the combinations I've found with their online arrow building software. It is really cool to tinker and see the results without buying the arrows.

    Lastly, I understand that all of this "theory" cannot match real-life shooting, I'm just trying to avoid re-inventing the wheel if possible...

    -Rob
     

    Attached Files:

  2. Cossack

    Cossack Incurable Tinkerer

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    I'm using Lazar II s in my 3 bows and have made arrows - in 22" shafts - with them for brother's fast Barnett, to our mutual satisfaction. BUT, given your purpose, I'd go with Lazar III, last batch of II's I used spine seemed on the light side for my 345 fps Cyclone. Their brass inserts for the Laz III s will ensure high FOC. Using the IIs with 110 gr insert, Blazers or Fusion Vanes and aluminum nocks I get FOC of 18 or 20% depending if 100 or 125 gr tip is used.
     
  3. beervo2

    beervo2 Senior Member

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    Out of my SZ380 I found the spine in the Laser III Pro's to be a better option than the Laser II's when shooting a high FPS..
    I fletched up some Laser III Pro's with 110 grn inserts & some with Victory's 92 grn inserts, both shoot great, in fact I get the same POI with either one using Blaser vanes..
    The Laser III Pro's are very accurate compared to the Laser II's when shooting the SZ380..
    Good luck!!

    Mike
     
  4. vixenmaster

    vixenmaster Guest

    X3 on Pro III, the II's are really weak spined fer any crossbow that shoots faster than 345-350 fps
     
  5. Wapster

    Wapster Member

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    Well I tried the 3's in the past but they were not the pro's. What did they change to give them the new "pro" name???
     
  6. beervo2

    beervo2 Senior Member

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    The Pro series have a straightness tolerance of .001 as opposed to .005, makes a difference as far as I can tell..JMO..

    Mike
     
  7. rchristoff

    rchristoff New Member

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    Great info - thanks everyone! I will definitely go with the III pros, unless UL's new arrows he's been talking about are a better buy :)
     
  8. 445 supermag

    445 supermag Member

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    I know my next batch of arrows are going to be lazer III pro's.

    Brian
     
  9. Wapster

    Wapster Member

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    Do the pro's weigh the same as regular III's ????
     
  10. beervo2

    beervo2 Senior Member

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    Yes...

    Mike
     
  11. Wapster

    Wapster Member

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    thanks Mike........you know....I have lived in Michigan my whole life but I had to look up where Otisville is.....lol now I know though !
     
  12. beervo2

    beervo2 Senior Member

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    Yep, it's just a small village about 20 miles north of Flint...

    Mike
     

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