Arrows spine from grains?

[aaron]

Yes, those are .500 spine arrows. If they are shooting left, you need a heavier point. Like a 200-250 grain point, instead of a 150. It all comes down to an interaction between several factors:arrow stiffness, point weight, width of the handle of the bow, pow poundage and drawlength. So, just because your arrow is a 50 pound spine and you have a 50 pound bow, doesn't necessarily mean it will fly well. Traditional bows tend to have a wide handle, requiring a weaker spine. When I shoot these type of arrows, I use the "GT trad 1535", which is just like your arrow, but weaker- it's a .600 spine arrow. 
So, if you want to make those shafts work, do not cut them shorter and use heavier heads. Or trade them for some weaker shafts.

[aaron]

http://www.huntersfriend.com/carbon_arrows/hunting_arrows_selection_guide_chapter_3.htm

[Blaflair2]

The bow is 60lbs. I cut an inch off one arrow and it seems to fly a lot better

[tallpine]

Blaflair, Are you left handed?

[Blaflair2]

Right handed

[aaron]

cutting will stiffen them fast

[Blaflair2]

I don't know why they wanted to go to the right if they're light. But I cut the one and it shoots better. Gonna experiment and shoot it a bit more but I think cutting them a bit is the key. Glad I used super glue for the inserts. Heat em up a little and they come right out

[aaron]

in your first post, you say they group a foot left, but in your last post, you say they go right. if you cut them, just experiment with one until you are sure. Cut off small increments, less than 1/2 inch. you can cut the nock end to avoid removing inserts every time.

[Blaflair2]

I meant left. Sorry. They went left