pse chart
http://www.pse-archery.com/cat.php?k=52357
there is a link on this page to it. at 27draw and 70lbs you are shooting the wronge arrow. last year i had a local dealer trying to sell some 200's for my buddies xforce. it was way under spined for 29 @70lbs. he even stated he could paper tune them.we took him up on his offer and watched him fail at it. but i can tell you one thing. 29 @70 with those arrows we did chrono it at 348. but that was dangerous and stupid. but i wasn't doing the shooting

Wv, I shot the 200's last season the whole season and never had any problems as far it blowing up in face!! I moved up to the 300's do you think that will be ok?

330

They were actually 24" long!! and weighed 309!!!!!!!!!!

NO WONDER YOU WERE HAVING PROBLEMS WITH THAT BOW

For real!!! I mean I have heavier arrows and a string tamer now and it's like a whole different bow. groups are far better now, and Im still shooting in the 290's!!