Originally Posted by nomad_archer
When it comes to arrows if they are the right spine (which is a measurement of the arrow deflection) is right for your bow then thats what you stick with. .
The only thing I would caution here is that I have had a few bows, many of my most recent, that required arrows with different spines than what was listed on the charts. The charts/software is a good starting point but if you can't get them to shoot you will have to play with spine above and below the suggested use.
I shoot a pretty fast bow, HCA Iron Mace, and was having issues getting 340's to fly. I figured I needed to go up in spine due to it being a pretty aggressive draw. After a long few days I actually ended up dropping down to 400's and my groups immediately shrank. Figuring out bows at times can be a chore but when you get it right!
I missed that you have ACC's now. Those are really good arrows in fact they are on my to try next list! Having the carbon on the outside will make them a touch more durable for field shooting. I do a lot of stump shooting while I am hunting. They are also a bit thinner than the FMJ's which helps with penetration.