What is the purpose of a tapered shaft?

[Tim in Wa.]

Icon 1 posted January 25, 2015 07:16 PM      Profile for Bjorn   Email Bjorn   Send New Private Message       Edit/Delete Post   Reply With Quote
I like the look and taper my own, whether or not is makes a difference-no idea.  [dunno]
Posts: 9763 | From: Los Gatos, California
could you please share your tapering method?
Tim

[Goose smasher]

That was a good read Greg! Thanks for sharing that!

Goose smasher

[Kopper1013]

Great read great! I was referring to ashby's report on how the tapered shaft passed through for greater penetration when encountering bone. The hole created from an 11/32 ferrel makes less resistance for the 5/16 that follows.

"8. Shaft profile - Tapered shafts show an 8% penetration gain over parallel shafts and a 15% gain over barrel tapered shafts. Barrel tapered shafts often used by long range target shots are the worst for penetration."