You could try, but I don't think the case capacity will allow you much gain. You can certainly experiment with some Quickload data. I would think your Ruger American is also a .308 ( not a true .311) and the 110 Barnes would get you some speed?
I've checked with Ruger and they say it's .311.....
It shoots pretty well with .308 bullets, but noticeably better with .311s. I'm using a .308 Sierra FB designed for the 30-30, just looking for a little more speed than the current 2000 fps. Not quite sold on most of the .311 bullets (except the Barnes) for deer-sized game yet.
