Reality Check
 

I read on another forum where an xbower was concerned whether his deer was at exactly 30 yds or maybe only 28 or still yet maybe at 32 yds. I was thinking wow, thats only 6' one way or the othewr, what's this guy shooting? So, having an enquiring mind, lol, I set my target at all three ranges and shot from my bench. I was kinda surprised that the Phoenix I hunt w/ had a 6" verticle group w/ 30 being right on. [knew that] Those 6' showed up as 3" high and 3" low. Even on the Emax, which I shot at the same time, the vert spread was 3" [overall]. I range every shot anyhow, and the farthest I can get a taget from my bench rest is 36 yds. W/ a V-zone, I just hold my preferred impact point at 36 between the 20 and 30 yd triangles and am on the money. The Phoenix is at somewhere between 280 and 290, w/ 431 gr GT's. Just thought I'd share this as a reminder to all on how that range thing can mess ya up quick!

RE: Reality Check
 

very interesting. goes to show how important range estimation is.....especially right at the point where the bolt begins to drop off.:eek:

RE: Reality Check
 

I find this weird lol because with my phoenix and the string that comes with the excals (not the FFF), my bow shoots from 20-30 w/ no difference and only drops 2" out to about 37 yards. At 10 yards it is only 1"-1.5" high, so i dunno why anyone elses is different. I shoot the GT II's w/brass inserts and 4" vanes and they weigh in at around 408-411. I recently switched to the GT w/ 5" vanes and alumin inserts and cannot vouch for them yet but they do shoot from 0-20 with only a 3" spread w/ field tips.

Mike

RE: Reality Check
 

Impossible: "I shoot the GT II's w/brass inserts and 4" vanes and they weigh in at around 408-411. I recently switched to the GT w/ 5" vanes and alumin inserts and cannot vouch for them yet but they do shoot from 0-20 with only a 3" spread w/ field tips."

I have near 2 dozen of same thing and mine are all within 2 grains of 431 except the dozen I got from Greywolf w/ 10 gr wraps. You might want to check those ranges and drop some more, my Emax at 328 fps and Paradox at 317 fps both drop more than what you posted. What are you using for a sight?

Edited to add: Your Phoenix will shoot 305 fps w/ FFF string and Factory issue 360 gr arrows. You lose about 10 to 15 fps w/ the Excell string you are using, and another 1 fps for every 5 gr arrow weight. That puts your fps around 280. Here's Excals ballistic chart for 400 gr arrows and 275 fps. While not exact, it's close enough to your set-up to show what I'm trying to say:

Well, that didn't copy like I thought, anyone interested click on "arrow ballistics" and then on new page click on aarrow performance chart for your fps, this one should be 275 fps, as close as possible to being Impossible, lol. As you can see from 20 to 30 w/ 20 yd sight in you are looking at about 6 3/4" drop, let alone farther ranges. Hope this helps ya get that big boy!!









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Arrow Performance Chart 275 fps



(Figures are assuming a 400 grain arrow @ 275 fps, 20yards sight-in)

[align=left]



[align=left]Range ( yards)[/align]
[align=left]Arrowdrop (inches)[/align]
[align=left]Terminal Velocity (FPS)[/align]
[align=left]Kinetic Energy (ft. lb.)[/align]

28[size=1]
1.73
269.55
64

3637
3839
264.21
62

4445
-6.72
258.98
60

5253
-18.63
253.84
[align=left]5859[/align]

6061
-35.95
248.8
6667[/align]

RE: Reality Check
 

The distances are 20, 30 and 40 yards from my Exocet 200. Weight is 435 grains.

RE: Reality Check
 

I use the peep sight and i guess this could be the reason, but i still know that mine do not drop like yours, and i honestly couldnt tell you why. Im not sayin your lying or yours are impossible, but thats how my phoenix shoots and i know it for a fact lol.

Ill shoot it tommorow and show some pics of dif yardages.

Mike

P.S. - I know that @ 40yds I have to hold 6 inches high, but theres no way it drops 16 inches like the pic above lol...im seriosly confused now

RE: Reality Check
 

Mike: It's not really a case of who's bow does what. I'm trying to suggest to you that what you think is happening is not. You cannot change the laws of physics. You might gain a little on the drop w/ those new 5" vanes w/ alum inserts, they will weigh around 360, as that's the same arrow in packages w/ Excals. Are you shooting to sight in from a bench rest or offhand? Here's yet another site w/ k.e. and ballistic calculator that may help you figure out what's going on. Frankly, I'm not smart enough to use this one for other than k.e. but the info is all there.
Here ya go, and let us know what you end up w/. http://home.att.net/%7Esajackson/ke.html

RE: Reality Check
 

I agree with the shoots of DNK has taken as we are both using the same set up.
Using my Exocet 200, excal string ( standard ) gt2's with brass inserts and 4 inch vanes, the drop at 40 yards is indeed alot compared to 30 yards.
My varizone scope zero'ed in for 20 yards.....the FPS ring is on the last zero of the 300 mark......so I'm guessing I'm shooting about 310 to 315 FPS max speed.
If I were to shoot using my 20 yard cross hair at 30 , then 40 ....my results would match DNK's.
Let me tell you of the deer I missed at 40 yards that I thought was at 30 yards...complete miss right under it.
The use of a range finder now is ....well priceless.I won't leave home with out it.
BOB

RE: Reality Check
 

Maybe there's more gravity in Canada. :eek:

RE: Reality Check
 

DNK-what kind of target is that? Got to be a good one and appears to be home made. Where did you buy it or how did you construct it?

RE: Reality Check
 

It was distributed by Excalibur but they are no longer made. I believe they are or were working on getting them made again. Great cheap targets but not home made. They weigh a ton.

RE: Reality Check
 

Thanks very much.

RE: Reality Check
 

Gravity is an average 9.78 m/s2 at the equator. It is about 0.5% higher at the poles at an average 9.83 m/s2. You're right. Next question is does that equate to 3" at 30 yds?


That target pic looks like somebody wants to buy some new bolts. That's what those other spots on the face are for ! LOL

RE: Reality Check
 

Too funny!

RE: Reality Check
 

nice shooting there DNK

RE: Reality Check
 

These are my shots from just now. Excal standard string with GT2's w/5" vanes that are in the right stuff excal pack. The shot where i started measuring (the top one) is 20 yds, the second is 30 and the third is 40. These were shot out of my phoenix w/ peep sight off a shooting bench. Oh and the tips are 100gr feild tips. By the way i was not aiming for the bullseye i wanted to stagger them to show the difference better, and plus my target isnt big enough to start from the center

RE: Reality Check
 

another pic

RE: Reality Check
 

Are you sure your yardages are correct.....did you measure or walk off your yardages? I don't see how this is possible.......impossible .

Your gonna have a team of scientist come over to your place .....your upsetting the law of physics my man.

BOB

RE: Reality Check
 

Bob, I used a bushnell range finder.

RE: Reality Check
 

Dnk: I think Bob was referring his post to Impossible.

Impossible: Not sure I follow your post w/ targets. If you aimed at the duct tape center every shot and just moved the target from 20 to 30and then to 40, it's all clear. You're sighted in closest to 40 yds. At 10 yds w/ peep and pin you are gonna be close no matter what range you have the bow sighted for. Dnk's target shot w/ scope shows what's really happening. Try sighting your bow in [if you want to play] dead nuts at 20, then move the target to 30 and 40, and I think you will see what we're trying to say. I think Dnk uses a method, can't recall the name where you can sight in at a certain range and be good so many yards short or long. Maybe he'll post it when he see's my reference to it.

RE: Reality Check
 

WOWWW......so , impossible is really doing the impossible ?
BOB

PS.....wait a min.....are those little jet engines I see on the back of them bolts ?

RE: Reality Check
 

Solid jet fuel! Come to think about it, Impossible thats pretty wild shooting were you really holding on that patch of tape? If you were there is something wrong, seriously wrong. An Excalibur should shoot better than that.

RE: Reality Check
 

I said i WASNT aiming for the center lol....i shot at the top of the target on the 20yrd shot and then held on the same spot for the 30 and 40 yrd shots...if i aimed @ the center i wouldve hit there, but since the target is so small i wouldnt have been able to show to 40 yard shot since it would be off the target, so i aimed at the top to get them all on. I staggered them like that so it would be easier to see. So no i didnt aim at the black tape center, i was trying to show how much my arrow drops not how accurate i am.

RE: Reality Check
 

This will explain it better

RE: Reality Check
 

:eek::eek::eek::eek::eek: I can't figure it out!
Impossible, I think its time for a chronograph check and a scope.

RE: Reality Check
 

Sorry bout that my internet was down..this pic will explain what i did, but i dunno how it happened lol

RE: Reality Check
 

CSI Crossbow!

RE: Reality Check
 

lol i know its getting so confusing

RE: Reality Check
 

Imp: What's your brace height set at, and in the color photo, are those nocks or inserts used as nocks? Have you run any of those through a chrony? I'm guessing you are at about 290-295 fps.

RE: Reality Check
 

Those are nocks, i dunno the brace height is right below the line closer to the trigger...theres two lines there right?

RE: Reality Check
 

:eek::eek::eek: