I'm new to bowhunting as I just started last year & I also shoot aluminum so maybe I shouldnt say anything. However thats not my style. I know beyond a doubt that shooting a straighter arrow with a fixed blade broadhead shrinks my groups alot at 30 yards. I cant shoot groups with good arrows at 30 yards without cutting fletches or nocks but I can with cheap ones. I'm talking Gamegetters as good & fall stalkers as cheap.
Screw on a field point & they both fly exelent & group exellent.
The reason I keep shooting the Alluminums is I can buy the cheapo ones & theyre as straight as most carbons at .005 & when I want to hunt I can use the better ones that are straighter than most carbons & still way cheaper.
Its my opinion that the reason alot of guys need to shoot mechanicals is because they insist on shooting carbons but wont or cant spend 80 to 100 bucks for a dozen arrows.
I oughtta add that even the stalkers group good enuff for hunting out to 30 (furthest I can shoot in my yard) I can keep them in 4" at that distance so I guess that .005 carbons should suffice as well. Not as good as .001 tho.