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.