Brace Height on Matrix and Mag-Tip

Discussion in 'Crossbow Hunting - Deer' started by 8ptbuk, Dec 16, 2017.

  1. 8ptbuk

    8ptbuk Member

    I've had a few string orders for shorter strings on the Excalibur Bulldog series, It's been said their a little faster with a 2" BH ( Shorter String ) than the original specifications. Has anybody tried a 1/2' to 1" shorter string on a Matrix 355/380/405 ? Or even the older Mag-Tip bows ? Love to here from someone who's tried this through a chronograph ! Thanks
     
  2. jacol84

    jacol84 Active Member

    Mike, I've read that about the Bulldog and new Micros on forums. Not sure if it's true or not. I know a shorter string doesn't add any speed to the Mag Tip limbs, at least it didn't for me. It might be a deflexd riser thing.
     
  3. 8ptbuk

    8ptbuk Member

    It could be, I shoot my 380 from 3/4" to 1" but haven't noticed any apparent increase in speed. Maybe a little quieter and Probably a little more narrow cocked????
    Also better on the limb tips. Maybe I need to go to 1 1/4" or more ! Lol
     
  4. xcaliber

    xcaliber Active Member

    I have read the same thing, but my Matrix models sit about 1/4" off the bumpers. Now this new Micro 355 with the DrStirrup bumpers sits high. I have not checked it with the chronograph, and really have no base line. These bumpers set about 3/8" higher than the the stock bumpers. And trying to maintain a brace height is nearly impossible unless you stay off the bumpers. I'll toil with this after the season ends, and I have time to really measure things. I think Danny Miller got this whole topic energized. Hard to contradict him in my book.
     
  5. 8ptbuk

    8ptbuk Member

    It is hard to get a string to stay put when using these BH distances. I think Excalibur went to Rhino String Material because of this ! If I could quit hunting long enough, I would do some testing also.
     
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  6. Oppie

    Oppie Active Member

    I recall reading about that on the Excal forum. Seems like Boo & Danny did some testing along those lines.
     
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  7. Stalker

    Stalker Member

    I have a friend who has recently got a Matrix 330. He has his BH at 1-1/4". He says his scope speed ring is at 305 fps with a 478gn arrow. I think the speed ring is off.
     
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  8. Oppie

    Oppie Active Member

    Here's Boo's thread I was thinking of Kind of a long read but covers the brace height better, just sift through the chaff an bs comments, a lot of information.
    I haven't tried the brace height/ chronny test myself yet but it's on my activity list :D.

    http://www.excaliburcrossbow.com/phpBB2/viewtopic.php?f=1&t=65322&hilit=speed
     
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  9. 8ptbuk

    8ptbuk Member

    Thanks for finding the link and sharing, Think I might contact a few of the guys that bought the shorter strings and see if it actually helps. Mike
     
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  10. Stalker

    Stalker Member

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  11. Stalker

    Stalker Member

    I tried increasing my BH with 2 different strings yesterday. First with the stock Excal string. Started at 1/4" off the bumpers and went to 1/2" I lost about 2-3 fps.Then I went to 3/4" Lost about 5-6 fps from where I started. Then I tried a Flemish string Dan sent me and got the same results. Thats as far as I care to go. Definitely not getting the same results a some.
     
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  12. jacol84

    jacol84 Active Member

    I still think it only works on the Bulldog/Gen 3 Micro risers that are deflexed. I lost speed when increasing brace height on both my old Vixan and the big Middleton 330. Thanks for testing, Paul.
     
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  13. 8ptbuk

    8ptbuk Member

    Thank You Very Much ! I appreciate you sharing that.
     
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  14. Stalker

    Stalker Member

    You may be right Jeff. Thats not what I gathered from the above link. It may be just my comprehension or interpretation though :eek::D. Then again you cant believe everything you read either.:rolleyes:
     
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  15. xcaliber

    xcaliber Active Member

    I'm too ornery to try this. I don't think I could be comfortable with the looks of that on my X-Bows. :cool::D
     
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  16. Oppie

    Oppie Active Member

    Same here, I stick with a decent brace height an keep the strings off the stops a bit.
     
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  17. 8ptbuk

    8ptbuk Member

    I think Excalibur was scratching for every fps they could ! Lol
     
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  18. xcaliber

    xcaliber Active Member

    I quit trying to chronograph & adjust stuff to gain speed. Accuracy kills, speed does not. Don't get me wrong, I like speed, but not at a sacrifice of accuracy. Changing brace heights to gain a few FPS sounds too iffy to me. Rather than mess with the bow, I'll try string materials, and arrow weights if needed. I have lately gone to heavier arrows to mitigate wind impact on accuracy, and think I'll continue in that direction. If i really need some extra speed, I'll jump from my tree stand and shoot on my way down!:eek::cool:
     
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  19. 8ptbuk

    8ptbuk Member

    Lol ! I agree !
     
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  20. 8ptbuk

    8ptbuk Member

    Never figured out why Excalibur didn't just make the rail a tad longer so regardless of what no. Limbs ended up on it , It would shoot advertised speed....
     
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