My first hunting rifle was a full length 303 hard wood nose to tail that was heavy, my Norc with gi fiberglass stock is not bad for weight, the 20 Mag clip is a bit of a pain in the tight brush, catches a bit
Is there any reason why a Winchester USGI bolt is any less desirable than a TRW?
That 5 rounder is a sob when your hands are cold. Not enough to grab onto to remove it, and poor leverage for inserting it.
A little practice at home is what you need. Your hand has to know
where to apply the pressure, where to grap and pull. With practice
you'll "feel" the mag. Practice with your eyes closed.