303 British capabilities

[uncle curt]

All i own for a rifle now is a 1941 No.4 MK1 Long Branch 303 British. The gun shoots very well and the scope holds well. This rifle has taken many deer and bear and im happy with its performance. Just out of curiousity, does a rifle like this have any long range capabilities. I do plan on reloading In the future. Any info on this gun would be greatley Appreciated. thanks.