RE: arrows..
Thats exactly what I do for 3d I use GT 3555XT' s with a 75gr tip less weight and a tad more speed.
For hunting I use GT 5575XT' s with a 100gr head less speed more weight more KE.
But I also change sights from my 3d sight to my hunting sight.
Once the sights are are sighted in it only takes 2 minutes to swap them over.