Rory,
I was nt trying to imply in any way that the R or RS would be the only factory installed or advertised model with the T-7.
Joe,
I also recognize that the factory did indeed install many sling swivels on Rs, RSs, and likely a number of 1899s that were ordered with the sling eyes (and then a bunch of post mils)... I was specifically referring to the generally accepted principal that the later sling swivels such as the #7s were installed at the gunsmiths and not Savage.
Let's try not to make this too much more confusing then it needs to be... I honestly believe that some guns left the Savage factory with T-7 mounts but would hope that all would be installed in exactly the same location... many were likely done later also but we need to collect more data points to draw any conclusions.
