The hard part for you will be seeing progress. At 50yd you will measure progress in less than tenths of an inch. I know I get frustrated if I don't see significant progress when I am working on a skill.

FWIW, if you want to save some on ammo, an air rifle at 25yd is a great tool for improving technique. Only problem is it would have to be one of better accuracy, which means a bit of money.