I have a Peregrin Falcon, 52# @ 28. Been a while since i used it. I have 2216 aluminum arrows for her.Are they to stiff, should i go with 100 grn or 125 grn heads. Thanks.

This should get you in the ball-park.

http://heilakka.com/stumiller/

If you're drawing a true 28", a 2018 would be a very tunable arrow with 100gr point

LBR, Thank you again.

if you're going to shoot 2216s your gonna need lots of head weight or that's the fastest 52# bow goin.
2016 or 2018 would probably work better but it's up to you.