I've been test shooting a number of different broadheads, all 125gr., that I have on hand in preparation for the upcoming hunting seasons. I've shot Slick tricks, Magnus 2 and 4 blade Stingers, NAP Thunderheads, SlingBlades, and Spitfires. The Magnus Stingers, although super accurate out of my longbows and recurves, did not fare well out of my Viper. At 30 yards they were impacting an average of 8" away from my fieldpoints, and not shooting into anything I could call a group. The Slick Tricks faired a bit better, doing 5" groups at 30 yards. The 125 Thunderheads shot slightly better than the Slick Tricks. The NAP Spitfires, using dental bands to provide extra insurance to premature opening, shot 2" groups about 1 1/2" below my fieldpoints. I should mention by groups, I mean I shot single arrows, marked their impact with a marker, then measured the size of three shots in succession. The real eye opener were the NAP 125 SlingBlades. I fired one shot, and the Slingblade hit deadcenter of my aiming point. I moved my broadhead target out to 40 yards, fired one Evo-X Centerpunch fieldpoint, and marked the hole with a marker. I took the same arrow, took off the fieldpoint and screwed in a SlingBlade, and hit the same hole. Shot a second time and hit within a half-inch. Moved the target out to 50 yards, and shot three SlingBladed arrows within 3/4" of the initial fieldpoint impact. One of the shots cut the fieldpoint hole. All four shots could have been covered by a half-dollar. I believe I have found my broadhead for this Fall. Shooters often say their xyz broadhead shoots just like their fieldpoints, the SlingBlade does for me, and needs no dental bands to hold the blades in place.