Gmx is also a mono. They are lots harder to squeeze into a grooved barrel and so pressures spike lots faster.
I figured a 3 gr delta is not much in terms of wt differential, plus with a long tip the 90 ought to be like you said, close in terms of bearing surface.
I figured a 3 gr delta is not much in terms of wt differential, plus with a long tip the 90 ought to be like you said, close in terms of bearing surface.