There seems to be a lot going on when an A5 operates. Pogo stick meets washing machine...Ka-Chunk!
What outcomes might there be using the two different settings and this one particular shell.
Would the gun function with either?
The gun will fire with either setting. It likely will not eject and reload with the 'heavy load' configuration.
A 'heavy load' is 1 1/8" high velocity (think duck/phez load).
The magazine tube should NOT be oiled, especially with 30 weight oil. I have no idea where advice like that comes from.
Browning severely chastised Winchester for doing just that to a prototype and then complaining that it didn't work.
That is a friction system.
All that is required on the tube is a very tiny bit of something like Rem Oil for rust prevention.
