This is interesting to read since I was using some Berry�s plated 200 gr. HP, basically a truncated cone shape, in my new Ruger SR1911 and it had the same failure to feed about once per magazine. It did this with both factory magazines, I don�t have any aftermarket mags yet. Tried two different lengths and it would still hang up on the feed ramp.
Same loads, same OAL in my Springfield XDm .45 fed fine.