You don't say if your Mod 71 is a Win or Browning. I think there is yet another maker of "modern" 71's, too.
Anyway, if a Browning I've read that the throat is a tad shorter than the original Winchesters and that you have to watch your COL. Don't want to load up too long of a cartridge for your 71.
Best of luck and let us know how things go.
