My favorite center fire rifle hands down, and the design of the M14 lends itself well to us southpaws from my dealings with them. (Contrary to what some of the manuals out there state.)
SAI M1A-A1 Bush rifle
M14S Tanker
LRB Arms M14SA
The reason I like it is that the left hand doesn't ever have to leave the grip, while the right can operate the op-rod handle, mag release, and insertion of a fresh mag into the mag well. Brass is ejected out and away at the 1/2 o'clock, and the location of the safety allows for ease of use with either hand.
Note: When the last round is fired, the bolt will lock back via this rifle's bolt stop. After another mag is loaded, (or 5rd cartridge clip is loaded directly into empty mag while it is still locked in the rifle), ....... the right hand simply pulls the op-rod handle to the rear so that the bolt stop disengages from the bolt...... then let her fly home.
11B