Recently acquired an M77 264 win mag. Seems not many were made. Apparently they were uncataloged so information is scarce. Mine is a 773 prefix s/n. Determined it was mfg'd in 1990. I'm trying to determine what the butt pad should look like. Mine has a black cushioned LimbSaver pad. I've been told there were 1043 made for Outdoor Sports in Ohio and they were shipped with a black cushioned butt pad. Wondering if anyone can confirm or advise which one it should have. One would think it should say Ruger on it even if it was a black cushioned pad.