When I changed to carbons I bought some 100 gr brass inserts and had some 100,125,145,175,and 200 gr points. Some I had and the rest I ordered from 3 r's. I started bare shaft shooting and triming the arrow and changing point weights until I found a combo that flew like a dart bare. I then crested them and four fletched. In two years of almost daily shooting I have lost one arrow. Pretty tough and they are either straight or broken. No more bent arrows. I shoot GT55/75 XT Hunters with 225gr up front. I shoot 48# @ 28". Arrows are 29.5". For target and 3D I use the aluminum insert (25gr) and a 200 gr point. For stumps and hunting I use the 100 gr brass insert and either a 125 gr broadhead or a 125 judo point.