I recently bought a new 55# Grizzly         but I'm having trouble getting my arrow setup down . I draw about 26.5  " , so that puts me a hair over 50# draw weight . I've been shooting some 3555  gt.s with a 225 gr tip and a 50 gr insert with some success but I've also shot the same shafts with 100 gr.s less weight up front , too loud  . I  have some 7595 camo gt.s cut to 28" with 275 gr.s up front that have shot well .
   My question is , is my form that bad or do these Grizzlies really shoot such a variety of shafts ?
I ran the numbers through 3 Rivers calculator and the 7595 is actually the best match.
Any thoughts or input would be greatly appreciated .
Oh yeah, I use 3 - 5 " feathers

Carbon arrows always gave me the fits, so many people have them figured out, not me. But I will say that a 3555 should be real good place to start. 75's should be pretty stiff (skipping right over the 5575's). Carbon is funky with length though, but even still - 50#-ish lbs, 28" arrow, 7595, 275 up front still seems stiff. Are you sure you did the calc data right? My grizzly is 55# @ 28, I draw 27", I shoot 29" 55-60 surewoods with 160 grain tips. Arrows fly wonderful, and sit right at 500 grains. Id take another look at the 3555's, theyre a very universal shaft for the common draw weight range. Just my opinion though.

my 56" 50# grizz @27" shoots good with 300 grain tip on beman 500 spine bowhunter shafts. Not sure what the length of shaft is but it cut pretty close to the riser.