I use them on deer. Not as broadly across the board as my use of the Barnes, but enough to say I can't see a difference in the wound channels. I do find them a little touchier to find seating depth for best accuracy than Barnes, but that might be that I have loaded enough Barnes for enough years that I am getting pretty efficient at sorting than problem out.
Once I have an accurate load with them or the GMXs as far as I am concerned they are all interchangeable. The loads work up to be so close that the difference is non-existent.
