I bought a 70# Guardian earlier this summer. I was shooting a 29" arrow, 416grains at 282fps. Although I was pleased with the speeds, after awhile of shooting my groups were getting larger and I was getting a pain in my shoulder. It just wasn't fun to shoot.

So I contacted my dealer and he ordered me 60# limbs. I am now shooting 28.5" Easton ST Epic 400, 394grains and I am shooting 270fps. So I only loss 12fps. (I did shoot my old 416grain arrows and I was getting 262fps).My groups are much better and I can shoot my bow for a much longer time. It is fun to shoot again.

I only hunt whitetails and will be hunting turkey next spring. I don't see the need for 70#

Good Luck.