These arrows are a huge step up from the older model 5.5 GPI arrows that were very brittle and wouldn't take any abuse. I shoot a High Country Xtreme bow at 72 lb. 28" draw and muzzy 90 grain 4 blade at 375 fps out to 100 yards and can put them in about a 4" circle with awesome penetration. They hold up as good as victory's. Just think of the possibilities? If your bow wont shoot below I.B.O. you could put in a lighted knock and be real close to I.B.O. smoking fast and flat shooting. I use a I.Q. retna lock 7 pin (keeps me in perfect form) .