Matrix 355 speed question
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Matrix 355 speed question
Out of my matrix 335 I am shooting a 410gr arrow at 316fps. Does that sound right to everyone? That is a far cry from 355fps.
Re: Matrix 355 speed question
No, you should be 335 plus! I get 345 with 390 grains, and find that to be pretty typical.
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Re: Matrix 355 speed question
Shooting 350 gr Diablo, clocking 361 fps.
Shooting 375 gr GT 2, clocking 353 fps.
Bucktail
Shooting 375 gr GT 2, clocking 353 fps.
Bucktail
Matrix 355 Tact-Zone TriggerTech ADF Laser11 Pro 385gr 100 gr WaspBoss 18in Diablos 150gr Boltcutter Dan Miller R.E.D.S .
ExoMax Vari-zone S5 18in Laser11 18in 2219 100gr WaspBoss
Phoenix Shadow-Zone ADF S5 18in Laser11 100gr WaspBoss
ExoMax Vari-zone S5 18in Laser11 18in 2219 100gr WaspBoss
Phoenix Shadow-Zone ADF S5 18in Laser11 100gr WaspBoss
Re: Matrix 355 speed question
out of my stock 355 the way it came in the box diablo arrows 150 boltcutters 345 avr
- Species8472
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Re: Matrix 355 speed question
Some calcs:
350 grain at 355 fps gives KE of 97.8 ft-lbs
410 grain at 316 fps gives KE of 90.8 ft-lbs
Definitely something wrong as most bows become more efficient with a heavier bolt not less.
Based on same KE as calculated for 350 grain you should get 328 fps at 410 grains. In reality I would expect 330+ as bow should be a little more efficient at a bolt weight of 410 grains.
For example my 405 gives me a KE of 127 ft-lbs using a 350 grain bolt. Moving to a 486 grain bolt ups my KE to 135 ft-lbs giving an increase in efficiency of 6-7%.
350 grain at 355 fps gives KE of 97.8 ft-lbs
410 grain at 316 fps gives KE of 90.8 ft-lbs
Definitely something wrong as most bows become more efficient with a heavier bolt not less.
Based on same KE as calculated for 350 grain you should get 328 fps at 410 grains. In reality I would expect 330+ as bow should be a little more efficient at a bolt weight of 410 grains.
For example my 405 gives me a KE of 127 ft-lbs using a 350 grain bolt. Moving to a 486 grain bolt ups my KE to 135 ft-lbs giving an increase in efficiency of 6-7%.
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Re: Matrix 355 speed question
It may be the chronograph. It is starting to give me different readings. Crap!
Re: Matrix 355 speed question
My 355 was shooting 340fps with a 410gr arrow.
Team Matrix 355
Matrix 355 The Crusher
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Matrix 355 The Crusher
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Re: Matrix 355 speed question
I to am shooting with a boo string so I think I will go with 340 and hope that Santa brings me one for Christmas. Thanks!Riflemanz wrote:My 355 was shooting 340fps with a 410gr arrow.
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Re: Matrix 355 speed question
Species8472 wrote:Some calcs:
350 grain at 355 fps gives KE of 97.8 ft-lbs
410 grain at 316 fps gives KE of 90.8 ft-lbs
Definitely something wrong as most bows become more efficient with a heavier bolt not less.
Based on same KE as calculated for 350 grain you should get 328 fps at 410 grains. In reality I would expect 330+ as bow should be a little more efficient at a bolt weight of 410 grains.
For example my 405 gives me a KE of 127 ft-lbs using a 350 grain bolt. Moving to a 486 grain bolt ups my KE to 135 ft-lbs giving an increase in efficiency of 6-7%.
I'll take the speed arrow any day.
Mike your in the ball park with your set-up Brace height plays a little also.
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1.75x5 Burris scope
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1.75x5 Burris scope
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STS
Feathered easton 2020's
Magnus stingers
Re: Matrix 355 speed question
mine # s were 321 with 427grs and 343 with 380grs
vixen 11
exocet 175 with Aging custom stock #27
Exocet 175
exocet 200
matrix 355
Micro Camo 335
Micro Nightmare 335
380 Lynx
BJ custom arrows
Boo string on vixen
exocet 175 with Aging custom stock #27
Exocet 175
exocet 200
matrix 355
Micro Camo 335
Micro Nightmare 335
380 Lynx
BJ custom arrows
Boo string on vixen
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Re: Matrix 355 speed question
I'm going to re-weigh my arrows, but I *thought* they were ~410, and I'm only getting 341 out of my Matrix 380. BEE 18", 150gr Xbow Tricks. Brace height appears correct and I got the same reading on several shots with both the broadheads and the 150gr field points. I don't remember the combination as its been a few weeks since I chrono'd it, but I want to say the same bolt with a 125gr FP ran 369. That just didn't seem right to me to have such a drop off .
Matrix 380 LSP
Re: Matrix 355 speed question
X 2mr meat wrote:mine # s were 321 with 427grs and 343 with 380grs
Mine are exactly the same
Kandy-a.k.a Raid
Midge- a.k.a Micro 335
SSAS Spynal Tapps-Original
100 Grn 2" Shwacker
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Midge- a.k.a Micro 335
SSAS Spynal Tapps-Original
100 Grn 2" Shwacker
Boo threads
Don't wreck the fun house!
Re: Matrix 355 speed question
agingcrossbower wrote:Out of my matrix 335 I am shooting a 410gr arrow at 316fps. Does that sound right to everyone? That is a far cry from 355fps.
you are not alone, my 355 chronied at 330 with a 380ish arrow plenty fast for me
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animals are killed, crops are harvesteD
REVX
matrix 355
BE executioners and zombies, w/110 brass
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Jeff
animals are killed, crops are harvesteD
REVX
matrix 355
BE executioners and zombies, w/110 brass
SWAT BROADHEADS
Boo string
Dagriz knife
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Re: Matrix 355 speed question
Remember that Excalibur's advertised speeds on the Matrix bows are with a 350gr combo (arrow and tip). This would require the 250gr Diablo arrow and a 100gr tip. So ironically, the Matrix bows will not shoot their advertised speeds out of the box with included equipment because they are shipped with 150gr field points.
With that said, Excalibur says that the 355 should shoot 335 fps with 400gr and 331 with 425gr, so it sounds like something is a little off with the OP's bow.
With that said, Excalibur says that the 355 should shoot 335 fps with 400gr and 331 with 425gr, so it sounds like something is a little off with the OP's bow.
Excalibur Matrix 380 Xtra
Re: Matrix 355 speed question
My 355 with a flemish twist string shoots a 397gr. arrow 331fps.