Husqvarna File Guides Confusion

[The avantgardener]

12 minutes ago, Crispin said:

That's what I would have thought, but the chart adw kindly posted shows different guides for semi chisel/chisel despite the pitch being and file size being the same

Some of the guides on the chart correspond Husqvarna's new generation of chains, made by themselves, Oregon used to make all their chains up to this point, your still using Oregon so the first two in the chart are the older ones that fit your chains.