Yes — on Leica screw-mount bodies like the IIIf, the short modern factory leader can make loading harder because these cameras were designed around a longer leader.

Two common solutions are:

• trim the film into a longer Leica-style leader, using scissors or a template
• load without trimming, but pull enough film from the cassette so the perforations fully engage the camera’s sprockets

The key point is that film advance is driven by the sprockets engaging the perforations, not just by the take-up spool. If the film is not fully seated or the perforations are not aligned with both sprockets, the film may fail to advance and the holes can tear.

So:

• make sure enough film is pulled out of the cassette
• ensure the film is properly seated and the sprocket teeth are fully engaged
• if needed, cut a longer leader to match Leica loading requirements
• if holes keep ripping, check for another jam or obstruction in the camera

In short: the short leader can be part of the problem, but correct sprocket engagement and seating are the real essentials.