54 pin
Clarence,
It may depend on what model.
I think you will find that the inner sleeve part of the bolt nose that fits inside the bolt handle collar acts as a stop for the pin. It appears as though the cam stops the forward motion, but it doesn't.
At least in the older 1400 series the spring retainer collar is simply that, not a pin stop.
This could vary on newer models, but on those newer I checked the pins did not contact the cams.
I don't know the cost of a new pin nowdays, they used to show up on ebay rather reasonable but with their new rules I don't know where you go, but working with a new pin seems easier.
bjm