The issue occurs with factory (S&B) Round Nose ammunition as well.
Even with Factory loads, a sharp bump with the heel of my hand is required to get past the obstruction, resulting a dent as in the photo.
I am trying to put together a load for my son to use in California so I loaded some Barnes 120 grain bullets.
Case was full length resized, no crimp.
Indicated in the photo I attached.
Both the Factory and the Mono Metal reloads cycle perfectly in my other MS 1903 Model.
I seriously doubt that the gun left the factory with this problem.
Curious.
Thanks for the input.