Hello fellow film shooters.

Today I shot my first roll of bulk film loaded reusing a canister.
Everything went fine, I set to make a 16 exposure film. Actually I could shoot 17 frames, but there was
a problem : for obvious reasons, the last frame is burnt, because it's the part of film that was exposed
while I was loading the canister into the rolling machine (not sure how to call it, the "lead" ?).

Anyhow, this makes me think that going forward, I should settle for a number of frames (24) as I roll,
and stop shooting at frame 23 or 22 to be on the safe side. Any other suggestion ?