I do not have extensive reloading years like some here. But I have read of some who start at the mid range of book loads, in your case min/max 54 - 58 the mid range would be 56g. And I think the loads if they are jammed into the lands would introduce higher pressure. That said...I often find fairly accurate loads being close to book mention COL but then sometimes I find accuracy that tighten up when seated a little close to the lands. Obviously if you are at the lands you probably should start at min loads and work from there. I also read someone mention that the book loads are fairly conservative probably because those writers know all loads need to work in many rifles manufactures.
