Thinking of shortening arrows is this overkill?(back quiver)

[Babbling Bob]

I agree with not cutting the arrows.  Just a half inch makes a big difference in arrows.

[Mr. fingers]

Ok let me clarify
My arrows are 3 in too long as is I left them long for spine reasons. I do like my sight picture better with the 28.5 over the 30.5s . I don't gap shoot so point on does not mean that much to me. I'm not really doing it just for,the quiver I'm not sure I will hunt with it or not. I have other quivers as I mentioned earlier.
So I'm not tuning to the quiver.
I have been shooting a 28.5 with a165 head up front and it groups right along with my 125s on 30.5s (100gr. Inserts) in both. Trust me I'm not going to cut them til I see how how the work on my existing 28.5 arrows.
The numbers I got from the calculator were bow 50 arrow 49.9 dynamic spine  that's with the Shorter arrow with more weight up front.

[katman]

I think the 3 five inch feathers are covering up tune issues. I could never get 2" shorter arrows to tune with only adding 40 grains to point.

Spine calculators are a starting point. Recommend bare shaft tuning.

[Mr. fingers]

Oh I plan on bare shafting for sure. Funny thing the shorter arrow that I have now with the 165 head  that groups with my longer ones the Fletching  is so beat up its almost non existent.
I'm not that Gung ho on shorter with heavier heads. I just ordered a hat and t shirt from 3 rivers so I got some 200 gr. FPs to play around with mostly out of curiosity.

[Mr. fingers]

I'm actually adding 75 gr. For the 2 in. And I wouldn't just cut off 2 in. I would start with a 1/4in then when I get close 1/8 in til tuned.

[BigJim]

I don't think you will like what you find....if you cut two inches off your tuned arrow. Calculators are frequently wrong and adding point weight won't significantly affect spine.

Most arrows ...too weak or stiff will look like they fly well when they are fletched.


bigjim

[Mr. fingers]

Well here ya go,
Got my 200 gr. points last night. I took 3 MFX 400 28.5 in with a 2 in 2018 footing. Stripped the fletch and wrap,off of one. Took the 3 arrows and shot threw paper the bare shaft showed a little tail high. The fletched actually showed a  slight tail left (weak). I shot again with coach feather out and got a decent bullet. Then I got company.
Went out this morning and shot my MFX 30.5in with 125s along with the 28.5s with 200. There wasn't much difference as far as where they impacted the bare shaft with the 200 did fly tail high and would impact tail high but would still hit with the others. I was,expecting as you all predicted a stiff reaction impacting to the left. But it didn't get it. Overall I liked the performance of my longer arrows. finer tuned I suppose. I may puts some more time experimenting. Where I sit now I'm not seeing as big of a reason to change . I think 300 up front maybe a bit overkill for my set up.
Tim

[mangonboat]

Cut away! I agree with pavan. Before carbon was invented, almost all bowhunters cut their arrows at 1" beyond their draw length so they were less likely to get tangled up in brush, easier to get out of your quiver and onto your nock without snagging a limb,etc, If you look at used vintage arrows for sale, you wont find many that are over 30" and, to the contrary, you'll find lots sold by Bear, Ben Pearson  and others that were cut at the factory to 28 or 29". Carbon is more sensitive to length because it is much more uniform in diameter , across a wide range of spines, than wood or old fiberglass arrows. Aluminum offers the greatest range of options to get the spine and length you want, recognizing that aluminum bends and stays bent to some degree. I favor old Micro Flite fiberglass..tough, straight, made in 13 different sizes to find a good fit for different bow weight and draw length .

Regardless of static spine, some materials that are slower responding, like fiberglass, simply work better in shorter lengths out of some bows.  I suppose pure center shot bow designs are made so to help with carbon spine requirements.  Anyway, Microflite 12 and 90 pound longbows were made for each other.  Two years ago, I lost a 27" bop #9 with a Schulz head after it blew through a deer.  I found the deer easy enough, but I still keep looking for that arrow when I hunt there.

[Mr. fingers]

Played around a bit today. Both sets of arrows seem to,fly about the same. My form wasn't the best. I took a break then before putting my bow away I decided to put a few shots through paper with the short heavy arrows I got near a perfect bullet but slight tear high. Then I Checked my longer arrows weak and tail high. So a slid my nock point down. Shot the longer arrow slight weak but near perfect.
Then I grabbed the shorter heavier arrow with no fletching and got the most perfect bullet hole. Shot 3 more times and perfect bullet. Then grabbed a shorter heavier fletched arrow and perfect bullet.
Then I put the bow away.
Tim

[Orion]

I thought that might work.      

[Mr. fingers]

Originally posted by Orion:
I thought that might work.            

I think you and I were the only two.
Thanks       :
Tim.