Jamesh asked "why?"
I wanted to get more front weight. My arrow weight was up around 620 already and from a 50# bow, that was about as heavy a shaft as I wanted.
Through another "tinkerer" I found the GT Entrada target light-weight shaft. Same .400 deflection, lighter GPI.
Had to mean they were a bit less strong. Over-footing (my term) w/ aluminum 2117 (3")+ 100 gr brass insert gave me a very strong shaft in that vulnerable front impact area behind the point where 90% of my alum bent when I shot them and previous carbons would break when /if they did break.
I had to chamfer both ends of the over-foot to minimze that bump transition as it draws over my pivot point under my seal skin rest.
At a fun shoot lately, I shot from a hill top to a creek where a tempting Gator 3D was set...didn't realize it was sitting on a large, moss covered ROCK! :eek:
Hit just that bit low and sparks flew as the arrow recoiled. I thought, "there goes one time consuming set up!"
Nada! The field tip was messed up, was white most of the tip from the limestone rock it hit, but the nock was there, the arrow was fine... nothing!
That's my "why", Jamesh