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Old 05-18-2006, 11:49 PM   #1
zman43302
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Default speed??????

ok all need some help. i dont own a cronographand im wondering what my fps is?
im shooting a 06 switchback xt 27" 70+
goldtip 55/75 pro hunter 377 total grains
anyone with 1 of those programs that figures it.or any educated guesses?
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06 mathews switchback xt 70# 27"
drop away rest
goldtip 55/75 28" 100 grain tip 377 tg
speed= tbd
yardage master sight

speed kills (me and my mathews can prove it)
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Old 05-18-2006, 11:53 PM   #2
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If I was to wager a guess, with the 27" draw, I would put it in the mid to upper 260's. I'am sure there is a shop that is close by that will chrono it for you. Probably would only cost a couple of bucks.



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Old 05-19-2006, 02:45 PM   #3
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I did it up on TAP with the IBO specs for your bow and it came up at 254. My personal experiences have been that TAP, when using IBO specs, is a little slower than when using actual specs. I think you would be around 260 with it.

How do your arrows fly? That spine seems pretty weak for 70 lbs. and that short bow. Hey, if they fly good, shoot em right!

Good luck with your new bow!
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Old 05-20-2006, 12:59 AM   #4
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they paper tuned bullets at 6-10-15-25 feet after minor ajustments to my rest.
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06 mathews switchback xt 70# 27"
drop away rest
goldtip 55/75 28" 100 grain tip 377 tg
speed= tbd
yardage master sight

speed kills (me and my mathews can prove it)
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Old 05-20-2006, 01:12 AM   #5
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i took my yardage master sight off my jennings and put it on my mathews.my jennings was 74#/30" shooting the same shaft @30 1/2" and it was shooting 274fps.when i sighted it in at 2"high at 15yrds i was dead on at 25yrds.
with my mathews i sighted it in at 2" high at 15 yrds and im not dead on til i get back to 28 yrds.
to me that says im faster then 274 what do you think ???????/
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06 mathews switchback xt 70# 27"
drop away rest
goldtip 55/75 28" 100 grain tip 377 tg
speed= tbd
yardage master sight

speed kills (me and my mathews can prove it)
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Old 05-20-2006, 01:28 AM   #6
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hopefully the club pres. brings his crono to the next shoot and ill find out for sure. i was thinking or hopeing it was around 275-278 it just seems a click faster then my jennings.
and at longer ranges (out at 45-50yrds) it dosent seem to drop as much
my jennings from 40 yrds out droped like a rock and my mathews it seems more like from about 47-48 yrds before it really dives like that
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06 mathews switchback xt 70# 27"
drop away rest
goldtip 55/75 28" 100 grain tip 377 tg
speed= tbd
yardage master sight

speed kills (me and my mathews can prove it)
zman43302 is offline   Reply With Quote
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