My pre-1959 (which means two things - I don't know with any further accuracy exactly when it was made, and I only know what I do because of the hassle I lived through in trying to teach gun parts suppliers the difference between left and right handed threads (ejector rod thread was reversed in 1959)) has a firing pin that pivots a small amount - perhaps five degrees. It looks to be designed this way (no identifiable wear or mushrooming anywhere in this area) but if it is supposed to be pinned in its slot firmly with no movement, I'd have to get it corrected.
I hope I can leave it alone because it shoots a ragged hole at twenty paces with scrap lead cast 148's and 3 gr bullseye. It has absolutely perfect cast bullet throat and groove dimensions.
Thanks.