RE: Need a heavy arrow for hunting...advice
continued from last post...
An arrow moves so quickly it would be hard to know for sure if this bump was happening.
By bare shafting an arrow it will tell you if the arrow is clearingcleanly or not.
I agree with adcock in that bare shafting is the best way to tune the arrow to the bow and the archer.
I differ with adcock in determining the bare shaft results. I feel that an arrow that tunes to a particular bow and archer will have the nock lined up with the point when bareshafted into a bag target. He (adock) describes some means of comparing bare shaft impact point with fletched arrow impact points. I have never felt compelled to try this comparison method, but many of my customers have told me that it left them frustrated and gave up on bareshafting.
Once you have got an arrow to bareshaft properly for you then the next step is to measure the length of the arrow and the spine or amout of deflection.
For exampel let say that it was an arrow made of POC that was exactly 29" long and and had a deflection of .360"which is a spine weight of 72# (26/.360). This arrow had a 125 grain tip weight.
Armed with the above knowledge a person would not have to guess what arrow to purchase if he wanted to change to aluminum or carbon. However he would have to know the deflections of the aluminum or carbon that he wanted to switch to.
He could get an easton 2018 and cut it to the same length of 29" and it would bareshaft the same. Spine on a 2018 is 72#.
He could get a Gold Tip 3555 which spines at 69# but he would have to cut is slightly shorter if possible.
He may be able to get a Gold Tip 5575 which spines at 90lbs but it would probably have to be left at full length and possibly add a bit more tip weight.
The main point is that since he knows what bareshafts pefectly out of his bow for him, he will know what will work or not.
Why Bareshafting?
You can put enough feather on any arrow and get good flight out of it, but excessive feather kills energy prematurly. A major objective is to get as much kinetic energy to the point of impact as possible.