How much is too much, and i'm confused

[BFreed59]

So tonight I was making up some footings for my carbon shafts, and just for grins decided to throw a 20" footing on one, (not sure if it would still be considered a footing at that length). But I put it on and went and shot it a bit later and much to my surprise it shot great, actually much better than the same setup with just a 1.5" footing on it, even though i figured it would be way over spined.

Anyways after shooting it a few times i decided i wanted to run the numbers through Stu Millers spine calculator, and it seems to not like having a long footing length, but the other numbers took me by surprise.

The output is showing a 870 grain arrow and a speed of 157 fps, that seems pretty high to me, but could be due to my ape arms, and a 32" draw.

And this has me thinking i might just make a few more for my hunting arrows.

And just for reference, i am shooting a takedown recurve i made from the binghams plans. 66" and 65# @ 32".

The arrow I footed was a black eagle carnivore spined at the 250 spine which is 9.7 grains per inch, with a 45 grain insert and 200 grain point. The aluminum arrow i footed it with was a 2219 shaft.

Just thought i would share and see if anyone had any input into why it seems to be shooting better.

And another plus is that is that it at least doubled the penetration i was getting from the same arrows.

[yaderehey]

Yeah, sounds a lot more like a Full Metal Jacket arrow than a footed arrow.

[96ssportsp]

I'll bet your bow is very quiet also. I have a 32 draw too, and I think we are blessed to have a "turbo" factor that normal people don't have, which leads to outstanding performance without huge draw weight.
I was shooting a 63 lbs Raptor longbow last year, with a 708 gr arrow, and though I didn't chrono it, was flying very flat and fast. Shoot it and enjoy. Scott.

[BFreed59]

Yeah a long draw really does seem to add some extra umph. I now I just need to make up a few more of these and get in some good practice and I will be ready for hunting season. Shouldn't have a problem at all with penetration at that weight and speed, and somewhere over 25% foc and a single bevel broadhead

[damascusdave]

So how does that arrow bare shaft...for me that is the test on correct dynamic spine...fletching can cover a pretty serious miss when it comes to dynamic spine...the problem comes on very short shots before the fletching can start steering the arrow...it is those short shots we should all be striving for

DDave

[JimB]

That arrow would be just over 13 gpp.I have setups in that range and 155 fps is normal for them so that may be an accurate speed that the calculator is giving you.Some people wouldn't like that much weight but I adapted to the trajectory very quickly and see a noticeable difference in penetration.

I will tell you though,with 245 grs up front of an arrow that heavy,your FOC will be nowhere near 25%.To build an arrow with 27% FOC,I had to have 57% of the arrow's weight on the front end.A 19% FOC arrow has 43% of the arrow's weight on the front.Your arrow's up front weight is only about 28% of the total weight.I would really doubt if your FOC is much over 15%.

If you want to find your true FOC,measure from the front of the shaft to the balance point and put your numbers in this calculator.

 http://archerycalculator.com/arrow-front-of-center-foc-calculator/

[BFreed59]

Ddave, I haven't bareshafted the arrow it had the fletching already on, but I might strip them off of one to test it out, I have shot it close at 4-5 steps and it seemed to fly straight then, so either it recovers very fast or would bareshaft ok.

Jim, I will check the balance I was just reading the number for foc from the calculator and that could definitely be off since it doesn't seem to like the addition of a long footing. And your estimate of 15% or less would seem more likely

[jess stuart]

Brian sounds like you got your bow shooting great.  That weight at that draw length, bet it would shoot through a T Rex.

[**DONOTDELETE**]

Sounds expensive to me... the full metal jacket shafts would be preferable i would think.

How much is too much? I think you have already long since crossed that line.... But if you are having fun with it, that's all that counts.