Although the Stevens 75 used a Savage 29 action there are differences from the Savage labeled versions. All the Stevens 75's I have seen have the earlier internals without the changes for Hi-Speed ammunition and parts catalogs also only show the earlier parts so they should only be shot with Standard Velocity or lighter loads, I suggest this even for Model 29 actioned guns that have the changes for Hi-Speed because they seem of marginal strength for continuous use of Hi-Speed ammunition.
I do not know where you came up with a manufacturer date of 1936, the Model 75 was dropped from Stevens catalogs sometime in 1933 or very early 1934 at the latest. The last catalog I have that it's listed is No 58 that has a price sheet dated June 21, 1932, it is not in catalog No 59 which I do not have a dated price sheet for, this catalog still lists the Visible Loader and I do have a later version of No 59 with a price list dated March 1, 1934 that by then has the Visible Loader counter stamped 'discontinued'.
