One more question. How much importance is given to a steel bh and brass shaft inserts? I can get almost 400 grains up front on my full length arrow dynamics and possibly reduce the spine enough to shoot from my 51# longbow. However I would be way up there in total arrow weight ( I’d guess well over 700 grains, can weigh it out when I get home tomorrow). This would give me a much stronger bh/arrow connection. Not sure what he fox would be but I bet is be getting close to uefoc.