How precise are those online speed calculators? I don't have a chrono yet and was curious so I put in my arrow numbers and I just don't believe it's right.
18" GT Devastator ( cut down)
110 gr brass insert
4 inch vanes
100 gr F.P
TOTAL WEIGHT- 385 grains
With these numbers archerycalculator.com is giving me 382 FPS..
Matrix 330..
Online calculators
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Online calculators
2013 Matrix 380 (inferno)
2014 Matrix 330 Mobu
2014 Ten point W/R Invader HP
2012 Bowtech Assassin black ops
2014 Matrix 330 Mobu
2014 Ten point W/R Invader HP
2012 Bowtech Assassin black ops
- nchunterkw
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Re: Online calculators
Your bow is rated at 330fps with a 350gr arrow.
A good way to estimate is to figure you lose 1 fps for every 5 grains above 350.
382gr-350gr = 32gr
32gr/5s = 6.4fps
330-6.4 = 323.6fps
Hope that helps
A good way to estimate is to figure you lose 1 fps for every 5 grains above 350.
382gr-350gr = 32gr
32gr/5s = 6.4fps
330-6.4 = 323.6fps
Hope that helps
Keith
Stand by the roads and look, and ask for the ancient paths; where the good way is,
and walk in it and find rest for your souls. - Jer 6:16
Micro 335 & 355
deerboyarchery.wixsite.com/trinitystrings
[email protected]
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Stand by the roads and look, and ask for the ancient paths; where the good way is,
and walk in it and find rest for your souls. - Jer 6:16
Micro 335 & 355
deerboyarchery.wixsite.com/trinitystrings
[email protected]
<{{{><
Re: Online calculators
Matrix series denominator is close to 3. I would say close to 318 FPS, That model does perform a bit higher than rated by 2 - 5 FPS, so 321 is my final answer.
It’s not the way you rock, it’s the way that you roll!
Re: Online calculators
Thank you!
2013 Matrix 380 (inferno)
2014 Matrix 330 Mobu
2014 Ten point W/R Invader HP
2012 Bowtech Assassin black ops
2014 Matrix 330 Mobu
2014 Ten point W/R Invader HP
2012 Bowtech Assassin black ops
Re: Online calculators
You also have to take the brace weight of your bow into consideration. A bit longer string increases speed, albeit not to that extent.
Vortex, Phoenix, single-shot rifles and handguns.
Incurable tinkerer.
Why hunt? Simple, it's BASIC. Why breath?!
Incurable tinkerer.
Why hunt? Simple, it's BASIC. Why breath?!