I' M SHOOTING A SIMILAR SETUP AS YOURS. IWAS SHOOTING THE CARBON XPRESS 200 FOR 3D. AFTER TALKING TO A TECH. AT C.E, THEY RECOMMENDED GOING TO THE CARBON XPRESS 300 FOR MY HUNTING ARROWS. EVEN WITH AN 85 GRAIN HEAD THEY SAID I WAS UNDERSPINED. I RECENTLY PURCHASED THE MAGNUS 100 GR. 4 BLADE STINGERS. THEY IMPACT IN THE EXACT SAME SPOT AS MY FIELD POINTS OUT TO 40YDS. SERIOUSLY, I DIDN' T HAVE TO TOUCH MY SIGHTS. BEST I' VE SHOT SO FAR.