Just like Mike said;
" they may not be stiff enough for you"
I shoot axis 500's, I have two wraps on them, 5 in. feathers three fleched, 125 gr Stanger, total arrow weight 435 gr.
And I shoot 43# and also 45#, and they're a little light for them. I will be increasing arrow weight, or changing to a different arrow.
I don't know if you could shoot the axis 400. The 400 to Little stiff. Carbon express 250 may be a better choice. It just depends on what you put up front, now you could possibly go with the axis for hundreds if you put 175 gr. or more up front.
Carl