Carbons and bare shaft tuning
 

Since I had some shafts with vanes I want to refletch with feathers, I tried something.

Shafts are CE terminators (black) 45-60, 29" long nock to insert and have a 125 grain tip screwed in. I was sure they were flying well, didn't seem to be doing much in flight and I was pretty happy with my shooting results.

Enter the bare shaft. I stripped one of vanes, turned my box target around to the unused side, backed up to 10 yards, took aim and let fly. Nock point seems to be correct, but the nock end of the shaft was to the right in the target. I repeated this several more times, with the same result.

This indicates shafts are too stiff, right? 125 grain is the heaviest tip I have on hand. How much heavier might I need to go to bring the nock end back in line in the target?

RE: Carbons and bare shaft tuning
 

You're sure you were shooting square on to the target, and not off at a bit of an angle, I assume.;)

Yeah, stiff arrows stick nock right for a right handed shooter. But I'd be more interested in seeing how a bare shaft groups with fletched shafts rather than just going by that. Sometimes the target itself can kick an arrow off on an angle when it sticks.

RE: Carbons and bare shaft tuning
 

:D

I was just reading something similar at OL's site.

I'll try it this afternoon, if possible.

RE: Carbons and bare shaft tuning
 

Got a chance to fling several.

Bare shafts definitely impact left of fletched shafts. From 10 yards, about 3-4" left.

How much heavier in point weight do you think I'll have to go up from my 125s to get the right spine?

For the record, CE terminator at 29" nock to insert with 125 grain tips from a Martin X-200 recurve 45# at 28" drawn to 28"...

RE: Carbons and bare shaft tuning
 

Just make them longer [:-]






[8D]

RE: Carbons and bare shaft tuning
 

No can do. Arrows were bought cut and inserts installed.

I have no problem with using a heavier head. Just would love to get an idea how much heavier to avoid the trial and error expense.

RE: Carbons and bare shaft tuning
 

Someone talk me down.

I was thinking about this last night, and why couldn't I get a bolt that would fit the tip adapter and several washers and a few nuts and play around with different weights that way?

Anyone ever done this?

RE: Carbons and bare shaft tuning
 

I tried shooting some wally world special 29" 45/60 terminators from a 49@ 27" black widow psav.I found that even with 175 grains they were too stiff.I figured I would need at least a 50 grain weighted insert and a 175-200 grain head to get em right.You could get some brass washers and just add them behind the fp see what happens.


CB

RE: Carbons and bare shaft tuning
 

Gold tip makes an internal weight system. 3 rivers also sells internal weight systems.

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RE: Carbons and bare shaft tuning
 

I got it! Know exactly what to do.... Save those arrows for when you get a 60 pound bow. [8D]

I kinda like the bolt and washer idea. You could make some devilish blunts like that.[:-]

RE: Carbons and bare shaft tuning
 

I had some more thoughts on this. It's not like I'm getting crazy flight, bare shafts simply shoot 3-4" left of fletched. With fletched, flight looks good and I'm hitting what I'm aiming at more often than not.

Perhaps it's not really even an issue then since I'll be hunting with fletched shafts?

It seems that bow cant is the great equalizer. If I hold the bow upright and perfectly vertical, I shoot left. I had previously thought this was due to the shaft not lining up easily under my dominant right eye (I shoot rh), but perhaps its a combination of that and the stiff spine issue. At release, the stiff shaft is veering to the left off the bow riser. When I cant the bow, the bow is still pushing off the riser, but now not as much left but a little more high. When I get to the proper (for me) 2:40 cant, the shaft is under my eye and the arrow impacts on the vertical plan. I probably have to hold lower that if I had the proper spine, but I'm used to shooting this way and I'm hitting the kill zone the overwhelming majority of the time (knocks on wood).

Does that make any sense? Since the fletching is letting me hit where I aim, should I even worry about spine right now? I believe the Martin x-200 I'm shooting is center shot, so it's more forgiving of spine, right?

RE: Carbons and bare shaft tuning
 

Cant does help out with spine issues. If you've got the arrow hitting the vertical plane with your preferred cant, then sounds like you're there. Just make sure it still does the same when you've got broadheads mounted up.

Why were you trying to tune holding the bow upright and perfectly vertical instead of on your cant anyway? [:-]

RE: Carbons and bare shaft tuning
 

Will do.

I wasn't, it was just for example :)